For parts a and b, use technology to estimate the following. a) The critical value of t for a 90% confidence interval with df = 8. b) The critical value of t for a 98% confidence interval with df = 10
Answers
(a) The critical value of t for a 90% confidence interval with df = 8 is approximately 1.860. (b) The critical value of t for a 98% confidence interval with df = 10 is approximately 2.764.
a) The critical value of t for a 90% confidence interval with df = 8 is approximately 1.860. This means that in a sample with 8 degrees of freedom, in order to construct a 90% confidence interval, the t-value corresponding to the critical region will be 1.860. This value is used to determine the margin of error in the estimation.
b) The critical value of t for a 98% confidence interval with df = 10 is approximately 2.764. In a sample with 10 degrees of freedom, to construct a 98% confidence interval, the t-value corresponding to the critical region will be 2.764.
This larger value indicates a wider margin of error compared to a lower confidence level. It allows for a greater range of possible values in the estimation, increasing the level of confidence in capturing the true population parameter.
To know more about the critical value refer here :
https://brainly.com/question/31213260#
#SPJ11
Related Questions
Help plz! Due tomorrow
Answers
The answer to your question is he bought 11 pounds of cashew.
Total pounds = 16
peanuts = p = $2.75
cashew = c = $3.25
total cost = $49.50
Process
1.- Write two equations to solve this problem
p + c = 16 Equation 1
2.75p + 3.25c = 49.50 Equation 2
Solve the system by substitution
2.- Solve equation 1 for p
p = 16 – c
Substitute p in equation 2
2.75(16 – c) + 3.25c = 49.5
Expand
44 – 2.75c + 3.25c = 49.5
Solve for c
3.25c – 2.75c = 49.5 – 44
0.5c = 5.5
c = 5.5/0.5
c = 11
3.- Find p
p = 16 – 11
p = 5 pounds
4.- Conclusion
Elijah bought 11 pounds of cashew and 5 pounds of peanuts
Connor has made deposits of $125.00 into his savings account at the end of every three months for 15 years. If interest is 10% per annum compounded monthly and he leaves the accumulated balance for another 5 years, what would be the balance in his account then?
Answers
You can calculate the balance in Connor's account after 15 years of regular deposits and an additional 5 years of accumulation.
To calculate the balance in Connor's account after 15 years of regular deposits and an additional 5 years of accumulation with 10% interest compounded monthly, we can break down the problem into two parts:
Calculate the accumulated balance after 15 years of regular deposits:
We can use the formula for the future value of a regular deposit:
FV = P * ((1 + r/n)^(nt) - 1) / (r/n)
where:
FV is the future value (accumulated balance)
P is the regular deposit amount
r is the interest rate per period (10% per annum in this case)
n is the number of compounding periods per year (12 for monthly compounding)
t is the number of years
P = $125.00 (regular deposit amount)
r = 10% = 0.10 (interest rate per period)
n = 12 (number of compounding periods per year)
t = 15 (number of years)
Plugging the values into the formula:
FV = $125 * ((1 + 0.10/12)^(12*15) - 1) / (0.10/12)
Calculating the expression on the right-hand side gives us the accumulated balance after 15 years of regular deposits.
Calculate the balance after an additional 5 years of accumulation:
To calculate the balance after 5 years of accumulation with monthly compounding, we can use the compound interest formula:
FV = P * (1 + r/n)^(nt)
where:
FV is the future value (balance after accumulation)
P is the initial principal (accumulated balance after 15 years)
r is the interest rate per period (10% per annum in this case)
n is the number of compounding periods per year (12 for monthly compounding)
t is the number of years
Given the accumulated balance after 15 years from the previous calculation, we can plug in the values:
P = (accumulated balance after 15 years)
r = 10% = 0.10 (interest rate per period)
n = 12 (number of compounding periods per year)
t = 5 (number of years)
Plugging the values into the formula, we can calculate the balance after an additional 5 years of accumulation.
By following these steps, you can calculate the balance in Connor's account after 15 years of regular deposits and an additional 5 years of accumulation.
Learn more about balance from
https://brainly.com/question/28767731
#SPJ11
The sum of two numbers is 20. Their difference is 4.
a. Write a system of equations that describe this situation
b. Solve by elimination to find the two numbers
Answers
Answer:
The two numbers are 12 and 8
Step-by-step explanation:
Well this is pretty simple
We can just list out everything that Adds up to 20
1+19
2+18
3+17
4+16
5+15
6+14
7+13
8+12
9+11
10+10
Now just subtract each one until you get the one that equals to 4
Which is 12 and 8 in this case
Factor completely x2 - 6x2 – 5x + 30.
(x + 6)(x2 + 5)
(x - 6)(x2 + 5)
(x - 6)(x2 – 5)
(x + 1)(x2 - 5)
Answers
Step-by-step explanation:
−5x2−5x+30
=5(−x+2)(x+3)
Answer:
5(−x+2)(x+3)
please help me answer these 2
Answers
Answer:
y-2/3x-4
the answer is (0,3)
3x+4y-12
the answer is (0,3)
What is the location of the second endpoint if the first endpoint is at (5,2) and
the midpoint is at (-5,5)?
Answers
Suppose that a system of seven equations with thirteen unknowns corresponds to a matrix in row echelon form. what is the largest possible number of pivots for this matrix?
Answers
For a system of seven equations with thirteen unknowns corresponds to a matrix in row echelon form. The largest possible number of pivots for this matrix is 7.
What is row echelon form and pivots?Using a technique known as Gaussian elimination, any matrix can be converted to reduced row echelon form. This is especially useful for solving linear equation systems.
If a matrix has the following properties, it is in Row Echelon form:
The bottom of the matrix contains any row that is entirely made up of zeros.The first non-zero entry in each row which does not encompass entirely zeros is 1. (called a leading 1).The leading 1 in the higher row is even further left than the leading 1 in the lower row for two consecutive (non-zero) rows.Pivoting is the process of transferring the first matrix to the second matrix utilizing row operations similar to equations.
The matrix "A" has three columns. As a result, there can only be three pivots, implying that at least one row of "A" in echelon type must be zero.
To know more about the row echelon form, here
https://brainly.com/question/24036095
#SPJ4
Today the population of a city is 250,000 and is growing at a rate
of 4% per year. When or how many years will the population reach
850,000
Answers
Step-by-step explanation:
Principal = 250,000
Rate = 4%
Simple interest = 850,000
Time = ?
\(t = \frac{100 \times interest}{principal \times rate} \\ t = \frac{100 \times 850000}{250000 \times 4} \\ t = \frac{100 \times 85}{25 \times 4} \\ t = \frac{8500}{100} \\ t = 85years\)
C(4, -2) and D(5,-6)
Answers
I'm going to assume we're finding the slope
-6 + 2 = -4
5 - 4 = 1
-4/1 = -4
-4 is your answer for the slope
I'm not sure what your question was, I just guessed.
A college professor always finishes his lectures within 2 minutes after the bell rings to end the period and the end of the lecture. Let X = the time that elapses between the bell and the end of the lecture and suppose the pdf of X is f(x)= kox? 0
Answers
Suppose X = the time that elapses between the bell and the end of the lecture and suppose the pdf of X is f(x)= kox, then the pdf of X is f(x) = (1/2)x, for 0 ≤ x ≤ 2.
Given that X represents the time elapsed between the bell and the end of the lecture, and the probability density function (pdf) of X is f(x) = kx, we can analyze the situation within the context of probability distributions.
Since the professor always finishes within 2 minutes after the bell, the range of X is between 0 and 2 minutes (0 ≤ x ≤ 2). To find the value of k, we need to ensure that the pdf integrates to 1 over this range, as required by probability density functions:
∫(from 0 to 2) kx dx = 1
After integrating, we get:
(k/2) * x² |(from 0 to 2) = 1
Evaluating at the limits:
(4k/2) - (0) = 1
Solving for k:
k = 1/2
Therefore, the pdf of X is f(x) = (1/2)x, for 0 ≤ x ≤ 2.
More on probability density function: https://brainly.com/question/30730128
#SPJ11
What is the distance (in units) between points C and D? Round your answer to the nearest hundredth.
Answers
Given:
The two points on a coordinate plane are C(-5,-1) and D(0,3).
To find:
The distance between C and D.
Solution:
Distance formula:
\(d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}\)
Using the distance formula, the distance between C(-5,-1) and D(0,3) is
\(CD=\sqrt{(0-(-5))^2+(3-(-1))^2}\)
\(CD=\sqrt{(0+5)^2+(3+1)^2}\)
\(CD=\sqrt{(5)^2+(4)^2}\)
\(CD=\sqrt{25+16}\)
On further simplification, we get
\(CD=\sqrt{41}\)
\(CD=6.40312424\)
\(CD\approx 6.40\)
Therefore, the distance between C and D is 6.40 units.
Using simple linear regression and given that the price per cup is $1.80, the forecasted demand for mocha latte coffees will be how many cups?
Price Number Sold
2.60 770
3.60 515
2.10 990
4.10 250
3.00 315
4.00 475
Simple linear regression:
Simple linear regression attempts to obtain a formula that can be used for forecasting purposes to predict values of one variable from another. To do so, there must be a causal relationship between the variables.
Answers
The direct condition relating the cost to the number sold is;'Y = 766.98 - 70.38X'Now, substitute the given cost of $1.80, to find the anticipated interest. The anticipated demand for mocha latte coffees will be 1,107.3 cups. Y = 766.98 - 70.38(1.8) Y = 1119.354.
1,107.3 cups of mocha latte coffee are anticipated to be consumed at a cost of $1.80 per cup. How can the predicted demand for mocha latte coffees be calculated? Simple linear regression tries to find a formula that can be used to predict values of one variable from another for forecasting purposes. There must be a causal connection between the variables in order to accomplish this. Given that the cost of a cup of mocha latte coffee is $1.80, the task at hand is to estimate the anticipated demand. Therefore, the issue can be resolved by substituting the given price for the linear equation describing the price and the number of sold using simple linear regression.
The following is a simple linear regression equation: Y = a + bX, where Y is the dependent variable (number of cups sold) and X is the independent variable (price per cup).a is the Y-intercept, which is a constant term, and b is the slope of the line, which is the regression coefficient. To begin, use the formula b = (Xi - X)(Yi - ) / (Xi - X)2, where Xi and Yi are the respective The variables' sample means are X and. We get b = [(2.6 - 2.71)(770 - 575.5) + (3.6 - 2.71)(515 - 575.5) + (2.1 - 2.71)(990 - 575.5) + (4.1 - 2.71)(250 - 575.5) + (3 - 2.71)(315 - 575.5) + (4 - 2.71)2]b = -335.74 / 4.77b = -70.38 Subbing the given values,We get,a = 575.5 - (- 70.38 × 2.71)a = 766.98Therefore, the direct condition relating the cost to the number sold is;'Y = 766.98 - 70.38X'Now, substitute the given cost of $1.80, to find the anticipated interest. The anticipated demand for mocha latte coffees will be 1,107.3 cups. Y = 766.98 - 70.38(1.8) Y = 1119.354.
To know more about linear regression refer to
https://brainly.com/question/32505018
#SPJ11
f(x)=3x+5 and g(x)=2x+1
value of x
Answers
You can treat x and 2x+1 just as though they are real numbers.
So f(2x+1) = 3(2x+1) - 5 = 6x + 3 - 5 = 6x - 2
In the above, I made use of something called the distributive law which says that if a,b and c are real numbers, then a(b+c) = ab + ac.
The area of the rectangular computer chips is 112a to the third power b to the second power square microns. What is the length? Width: 8ab microns
Answers
The length of the rectangular computer chip is 14a²b.
To find the length of the rectangular computer chip, we can use the formula for the area of a rectangle:
Area = Length * Width
Given that the width is 8ab and the area is 112a³b², we can substitute these values into the formula and solve for the length:
112a³b² = Length * 8ab
To isolate the length, we divide both sides of the equation by 8ab:
Length = (112a³b²) / (8ab)
Simplifying the expression:
Length = (112/8) * (a³b² / ab)
Length = 14 * (a²b)
Therefore, the length of the rectangular computer chip is 14a²b.
Learn more about Rectangle here
https://brainly.com/question/8238325
#SPJ4
PLS HELP what expression is equivalent to 2 + y + y + y + y + y +3?
Answers
Answer:
5y+5
Step-by-step explanation:
I hope this is right
Please solve this for me
Answers
Answer: $800 because if you have a light that is $2,000 and it loses %10 of its price per month, and June is 4 months away, then it is only $800.
4 x .1 = .4 so $2,000 x .4 = $800
Blair & Rosen, Inc. (B&R), is a brokerage firm that specializes in investment portfolios designed to meet the specific risk tolerances of its clients. A client who contacted B&R this past week has a maximum of $85,000 to invest. B&R's investment advisor decides to recommend a portfolio consisting of two investment funds: an Internet fund and a Blue Chip fund. The Internet fund has a projected annual return of 9%, whereas the Blue Chip fund has a projected annual return of 8%. The investment advisor requires that at most $55,000 of the client's funds should be invested in the Internet fund. B&R services include a risk rating for each investment alternative. The Internet fund, which is the more risky of the two investment alternatives, has a risk rating of 6 per thousand dollars invested. The Blue Chip fund has a risk rating of 4 per thousand dollars invested. For example, if $10,000 is invested in each of the two investment funds, B&R's risk rating for the portfolio would be
6(10) + 4(10) = 100.
Finally, B&R developed a questionnaire to measure each client's risk tolerance. Based on the responses, each client is classified as a conservative, moderate, or aggressive investor. Suppose that the questionnaire results classified the current client as a moderate investor. B&R recommends that a client who is a moderate investor limit his or her portfolio to a maximum risk rating of 410.
(a)
Formulate a linear programming model to find the best investment strategy for this client. (Assume N is the amount invested in the internet fund project and B is the amount invested in the Blue Chip fund. Express the amounts invested in thousands of dollars.)
Max _______________ s.t.
Available investment funds
Maximum investment in the internet fund
Maximum risk for a moderate investor
N, B ≥ 0
(b)
Build a spreadsheet model and solve the problem using Excel Solver. What is the recommended investment portfolio (in dollars) for this client?
internet fund$
blue chip fund$
What is the annual return (in dollars) for the portfolio?
$
(b)
Suppose that a second client with $85,000 to invest has been classified as an aggressive investor. B&R recommends that the maximum portfolio risk rating for an aggressive investor is 450. What is the recommended investment portfolio (in dollars) for this aggressive investor?
internet fund$
blue chip fund$
(d)
Suppose that a third client with $85,000 to invest has been classified as a conservative investor. B&R recommends that the maximum portfolio risk rating for a conservative investor is 320. Develop the recommended investment portfolio (in dollars) for the conservative investor.
internet fund$
blue chip fund$
Answers
A. N, B ≥ 0 (non-negativity constraint)
B. The recommended investment portfolio (in dollars) for this client can be found by reading the values in cells A1 and B1.
C. You can solve for the recommended investment portfolio (in dollars) by reading the values in cells A1 and B1.
D. You can solve for the recommended investment portfolio (in dollars) by reading the values in cells A1 and B1.
(a)
The linear programming model to find the best investment strategy for this client can be formulated as follows:
Maximize: 0.09N + 0.08B
Subject to:
N + B ≤ 85 (maximum investment of $85,000)
N ≤ 55 (maximum investment of $55,000 in the internet fund)
6N + 4B ≤ 410 (maximum risk rating of 410 for a moderate investor)
N, B ≥ 0 (non-negativity constraint)
(b)
To solve the problem using Excel Solver, you can set up the following spreadsheet model:
Cell A1: N (amount invested in the internet fund)
Cell B1: B (amount invested in the Blue Chip fund)
Cell C1: =0.09A1 + 0.08B1 (annual return for the portfolio)
Constraints:
Cell A2: ≤ 85
Cell B2: ≤ 85
Cell C2: ≤ 55
Cell D2: ≤ 410
The objective is to maximize the value in cell C1 by changing the values in cells A1 and B1, subject to the constraints.
Using Excel Solver, set the objective to maximize the value in cell C1 by changing the values in cells A1 and B1, subject to the constraints in cells A2, B2, C2, and D2.
The recommended investment portfolio (in dollars) for this client can be found by reading the values in cells A1 and B1.
(b)
For the aggressive investor with a maximum portfolio risk rating of 450, the linear programming model remains the same, except for the constraint on the maximum risk rating.
The new constraint would be: 6N + 4B ≤ 450
Using the same spreadsheet model as before, with the updated constraint, you can solve for the recommended investment portfolio (in dollars) by reading the values in cells A1 and B1.
(d)
For the conservative investor with a maximum portfolio risk rating of 320, the linear programming model remains the same, except for the constraint on the maximum risk rating.
The new constraint would be: 6N + 4B ≤ 320
Using the same spreadsheet model as before, with the updated constraint, you can solve for the recommended investment portfolio (in dollars) by reading the values in cells A1 and B1.
Learn more about investment from
https://brainly.com/question/24703884
#SPJ11
If M=1,000,P=2.25, and Y=2,000, what is velocity? a. 2.25 b. 4.5 c. 2 d. None of the above is true
Answers
Answer:d
Step-by-step explanation:
The answer is d. None of the above is true.
To calculate velocity, we need to use the equation:
Velocity = M * P / Y
Given:
M = 1,000
P = 2.25
Y = 2,000
Plugging in the values:
Velocity = 1,000 * 2.25 / 2,000
Simplifying:
Velocity = 2.25 / 2
The result is:
Velocity = 1.125
Therefore, the correct answer is: d. None of the above is true.
Learn more about velocity
https://brainly.com/question/30559316
Beth wants to paint the four walls of her rectangular bedroom. Her room is 10 feet wide, 13 feet long, and 8 feet high. She will not paint her rectangular door, which is 3 feet wide and 7 feet high. What is the total area of the walls that Beth needs to paint?
A. 347 square feet
B. 368 square feet
C.578 square feet
D. 1019 square feet
E. 1040 square feet
Answers
Answer:
D; 1019 square feet
Step-by-step explanation:
10 x 13 x 8 = 1040 square feet
3 x 7 = 21 square feet
1040 - 21 = 1019 square feet (:
Answer:
10x13 is 130
130x8 is 1040
Step-by-step explanation:
whats the circumference of a circle if the radius is 1.5 show your work
Answers
Answer:
well the eqaution is c=2pie r
the answer is 9.42
Step-by-step explanation:
hope this helpsss
Step-by-step explanation:
C=2πr
=2×22/7×1.5
=44/7×1.5
=9.42857143
Here are several function rules. Calculate the output for rules 1–5 when you use -6 as the input for each rule. Simplify fractions and express in the form a/b if necessary and use the word pi for π
.
Answers
Answer: 13,36,-2,-2,pi
Step-by-step explanation:
You do exactly what it says for the rule to -6 to get your answer.
The vertices of ABC are A (0, 0), B (6, 0), and C (3, 7). What type of triangle is ABC?
A. acute isosceles triangle
B. acute scalene triangle
C. right isosceles triangle
D. right scalene triangle
Answers
Two sides of triangle are equal triangle ABC acute scalene triangle. Option B right choice.
The type of triangle ABC can use the Pythagorean to check if it is a right triangle and the distance formula to check if it is an isosceles or scalene triangle.
Using the distance formula can find the lengths of the three sides of triangle ABC:
AB = √((6-0)² + (0-0)²) = 6
BC = √((3-6)² + (7-0)²) = √(58)
AC = √((3-0)² + (7-0)²) = √(58)
BC=AC ≠AB , and the triangle is a acute scalene triangle.
The triangle is a right triangle can use the Pythagorean:
If the triangle is a right triangle, then one of the sides must be the hypotenuse and the other two sides must be the legs.
Let's assume that AC is the hypotenuse and AB and BC are the legs. Then, we have:
(AC)² = (AB)² + (BC)²
Substituting the values we found earlier, we have:
(√58)² = 6² + (BC)²
58 = 36 + (BC)²
(BC)² = 22
22 is not a perfect square so (BC)² cannot be equal to the difference between two perfect squares.
Triangle ABC is not a right triangle.
Option B right choice.
For similar questions on acute scalene triangle
https://brainly.com/question/24057388
#SPJ11
Please help me and could someone tell me how to get it?
Answers
Given points A(-1,4) and B(x,7), determine the value(s) of x if AB=5cm
Answers
The value of x is either 3 or -5 based on the distance formula.
What is a co-ordinate system?
In pure mathematics, a coordinate system could be a system that uses one or additional numbers, or coordinates, to uniquely confirm the position of the points or different geometric components on a manifold like euclidean space.
Main body:
according to question
Given points A(-1,4) and B(x,7)
Also AB = 5 cm
Formula of distance = \(\sqrt{(y1-y2)^{2}+(x1 -x2)^{2} }\)
here by using points ,
5 = \(\sqrt{(x+1)^{2} +(7-4)^{2} }\)
taking square on both side ,'
25 = \((x+1)^{2} +3^{2}\)
25-9 = (x+1)²
16 = (x+1)²
taking square root on both sides,
x+1= ±4
x = 4-1 = 3 or x = -4-1 = -5
Hence value of x is either 3 or -5.
To know more about point , visit:
https://brainly.com/question/26310043
#SPJ1
The velocity of a car relative to the ground is given by VGC and the velocity of the train relative to the ground is given by vtg write out the question to find the velocity of the car relative to the train
Answers
The velocity of a car relative to the train can be found by subtracting the velocity of the train from the velocity of the car relative to the ground. This can be represented mathematically as: VCT = VCG - VTG, where VCT is the velocity of the car relative to the train, VCG is the velocity of the car relative to the ground, and VTG is the velocity of the train relative to the ground.
To understand this formula, we need to know the concept of relative velocity. Relative velocity refers to the velocity of an object with respect to another object. In this case, the car and the train are moving with respect to the ground, but we want to find the velocity of the car with respect to the train.
Let's assume that the car is moving at 60 km/h relative to the ground and the train is moving at 80 km/h relative to the ground in the same direction. Then, the velocity of the car relative to the train can be found as:
VCT = VCG - VTG
VCT = 60 - 80
VCT = -20 km/h
The negative sign indicates that the car is moving in the opposite direction of the train. Therefore, the velocity of the car relative to the train is 20 km/h in the direction opposite to the train.
In conclusion, to find the velocity of the car relative to the train, we need to subtract the velocity of the train from the velocity of the car relative to the ground. This is an important concept in physics and is used in many real-life situations.
Know more about Relative velocity here:
https://brainly.com/question/18829522
#SPJ11
Conservationists have despaired over destruction of tropical rain forest by logging, clearing, and burning." These words begin a report on a statistical study of the effects of logging in Borneo. Here are data on the number of tree species in 12 unlogged forest plots and 9 similar plots logged 8 years earlier:
Col1 Unlogged 2218 222015121 13 13 1913 19 15
Col2 Logged 17 4 181418151510 12 Use the data to give a 90% confidence interval for the difference in mean number of species between unlogged and logged plots. Compute degrees of freedom using the conservative methoo. Interval: ________to__________.
Answers
Answer: -8.16 to 15.84
Step-by-step explanation: Confidence Interval is an interval in which we are a percentage sure the true mean is in the interval.
A confidence interval for a difference between two means and since sample 1 and sample 2 are under 30, will be
\(x_{1}-x_{2}\) ± \(t.S_{p}\sqrt{\frac{1}{n_{1}}+\frac{1}{n_{2}} }\)
where
x₁ and x₂ are sample means
t is t-score
\(S_{p}\) is estimate of standard deviation
n₁ and n₂ are the sample numbers
The estimate of standard deviation is calculated as
\(S_{p}=\sqrt{\frac{(n_{1}-1)s_{1}^{2}+(n_{2}-1)s_{2}^{2}}{n_{1}+n_{2}-2} }\)
where
s₁ and s₂ are sample standard deviation of each sample
Degrees of freedom is:
\(df=n_{1}+n_{2}-2\)
df = 12 + 9 - 2
df = 19
Checking t-table, with 90% Confidence Interval and df = 19, t = 1.729.
The mean and standard deviation for 12 unlogged forest plots are 17.5 and 3.53, respectively.
The mean and standard deviation for 9 logged plots are 13.66 and 4.5, respectively.
Calculating estimate of standard deviaton:
\(S_{p}=\sqrt{\frac{(12-1)(3.53)^{2}+(9-1)(4.5)^{2}}{12+9-2} }\)
\(S_{p}=\sqrt{\frac{299.07}{19} }\)
\(S_{p}=\) 15.74
The difference between means is
\(x_{1}-x_{2}\) = 17.5 - 13.66 = 3.84
Calculating the interval:
\(t.S_{p}\sqrt{\frac{1}{n_{1}}+\frac{1}{n_{2}} }\) = \(1.729.15.74.\sqrt{\frac{1}{12} +\frac{1}{9} }\)
\(t.S_{p}\sqrt{\frac{1}{n_{1}}+\frac{1}{n_{2}} }\) = \(27.21\sqrt{\frac{21}{108} }\)
\(t.S_{p}\sqrt{\frac{1}{n_{1}}+\frac{1}{n_{2}} }\) = \(27.21\sqrt{0.194}\)
\(t.S_{p}\sqrt{\frac{1}{n_{1}}+\frac{1}{n_{2}} }\) = 12
Then, interval for the difference in mean is 3.84 ± 12, which means the interval is between:
lower limit: 3.84 - 12 = -8.16
upper limit: 3.84 + 12 = 15.84
The interval is from -8.16 to 15.84.
Devonte is balancing his checking account. His account statement does not include a deposit of $107.00 that he
made on November 1st. What is Devonte's actual account balance?
Answers
Answer:
its $1,330.26 D
Step-by-step explanation:
Answer:
D
Step-by-step explanation:
Match the following equation to the correct situation.
A + A(8%) = A(1.08)
A.
the amount donated by a company which gives 8% of A dollars collected at a charity banquet
B.
the amount Tonya owes after putting 8% down on an A home
C.
the amount Jess owes Julie from borrowing A with 8% interest
D.
the amount Ryan paid for two shirts, one was full price for A, the other was discounted 8%
Answers
A + A(8%) = A(1.08) matches the amount Jess owes Julie from borrowing A with 8% interest .
Let the amount Jess owes Julie = A
The interest rate on amount is 8%
Total amount to be paid = The amount taken + 8% on the amount taken
Total amount to be paid = A + 8% of A
Total amount to be paid = A + 0.08A
Total amount to be paid = 1.08A
Hence the correct situation which matches the equation A + A(8%) = A(1.08) is the amount Jess owes Julie from borrowing A with 8% interest .
To know more about interest click here :
https://brainly.com/question/19291527
#SPJ4
Can somone pls help me .. will mark u brainliest !
Answers
1.D
2.D
3.B
Hope this helps:(
Tom has 4000 dollars. He earns 375.9 dollars every month, he drops 136.39 dollars and loses it. But in the span of 7.6 months he found all of it. How much money does he have now? (Including the money he earned over the 7.6 months)
Answers
Answer:
I think its 6856.84
Step-by-step explanation
After finding the money he has his 4000 dollars back.
4000 dollars add the money he earned in 7.6 months equals to 6856.84
Answer:
6856.84
Step-by-step explanation:
4000 + (375.9 x 7.6) = 6856.84
Step by Step its...
4000 + (375.9 x 7.6)
4000 + (2856.84)
6856.84