The Decision rule for rejecting the null hypothesis, Z > 1.28
What is Null Hypothesis?
The null hypothesis is a common statistical theory that asserts that no statistical link or significance exists between two sets of observed data and measured phenomena based on a single observed variable.
Given,
Sample Voters - 800
Residents Favored Construction - 64%
Percentage of residents who favour construction is more than 60%.
This is right tailed test, for α = 0.1
Critical Value Z is 1.28
Hence reject h0 if Z >1.28
Z > 1.28 is the decision rule for rejecting the null hypothesis at the 0.10 level
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a tendency to do nothing or to remain unchanged what's is?
Answer:
\(\huge\colorbox{pink}{✏﹏ \: Inertia \: }\)
➳ Inertia refers to the tendency to do nothing or to remain unchanged in its state of motion or rest unless an external unbalanced force acts on it (Newton's third law of motion - also known as the Law of Inertia)
What percent of the large square is shaded?
Find the value of the 50th term for the seqeunce 12, 18, 24, 30, 36,
THE ABOVE SEQUENCE IS ARITHMETIC
WE KNOW THAT THE FIRST TERM a =12
AND THE DIFFERENCE d=18-12=6
THE LOGIC OF ARITHMETIC SEQUENCE SAYS THAT
\(t(n) = a + (n - 1)d \\ t(50) = a + (50 - 1)d \\ t(50) = a + 49d \\ t(50) = 12 + 49(6) \\ t(50) = 306\)
THE ANSWER IS 306
GOODLUCK
Answer:
306 is the answer
Solve the following problems. A manufacturer of tin boxes wishes to make open boxes from pieces of tin with dimensions 8 in. by 15 in. by cutting equal squares from the four corners and turning up the sides. Find the volume of the largest box that can be manufactured in this manner.
To find the volume of the largest box that can be manufactured, we need to determine the size of the squares that need to be cut from the corners of the tin sheet.
Let's assume the side length of each square cut from the corners is x inches. When we cut out squares from each corner, the dimensions of the resulting open box will be (8 - 2x) inches by (15 - 2x) inches by x inches. To maximize the volume, we need to find the value of x that maximizes the expression (8 - 2x)(15 - 2x)(x). To find the maximum, we can take the derivative of the volume expression with respect to x and set it equal to zero:
d/dx [(8 - 2x)(15 - 2x)(x)] = 0
Expanding and simplifying the expression, we get:
-60x² + 164x - 120 = 0
Now we can solve this quadratic equation for x. Factoring the equation, we have:
-4(15x² - 41x + 30) = 0
(15x² - 41x + 30) = 0
(3x - 10)(5x - 3) = 0
This gives us two possible values for x: x = 10/3 and x = 3/5.
Since x represents the side length of the square, it cannot be negative or greater than the dimensions of the tin sheet. Therefore, we discard the x = 10/3 solution.
So, the only valid value for x is x = 3/5.
Substituting this value back into the volume expression, we get:
Volume = (8 - 2(3/5))(15 - 2(3/5))(3/5)
= (8 - 6/5)(15 - 6/5)(3/5)
= (34/5)(69/5)(3/5)
= 34 * 69 * 3 / (5 * 5 * 5)
= 6996 / 125
= 55.968 cubic inches
Therefore, the largest box that can be manufactured has a volume of approximately 55.968 cubic inches.
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Two plumbing companies charge money for each hour of work, plus a one-time fee.
A Plus Plumbing charges according to this table:
time (hours) cost (dollars)
1 140
4 320
6 440
Quality Plumbing charges according to this graph:
a. How much does A Plus Plumbing cost for each hour of work, and what is the one-time fee? Type the answers into the boxes below.
The cost for each hour of work is $
and the one-time fee is $
Explain or show your reasoning.
b. How much does Quality Plumbing charge for each hour of work, and what is the one-time fee? Type the answers into the boxes below.
The cost for each hour of work is $
and the one-time fee is $
Explain or show your reasoning.
c. Can A Plus Plumbing and Quality Plumbing ever charge the same total for the same amount of time?
Select the correct choice.
Yes
No
Explain or show your reasoning.
The costs of both companies are found using the equations of line y = 50x + 150.
What is the line equation?A straight line's general equation is y = mx + c, where m denotes the line's slope and c its y-intercept.
Given,
In addition to a one-time fee, two plumbing companies bill customers for each hour of work.
Costs of Quality Plumbing
The graph has two points at (0,150) and (1,200)
The line's equation is given by
y - 150 = (200-150)/(1-0) (1-0) [ x - 0]
y - 150 = 50x
y = 50x + 150
Additional plumbing fees
line equation
two points (1, 140) are taken, and (4, 320)
y - 140 = (320-140)/(4-1) (4-1) [x -1]
y - 140 = 60x - 60
y = 60x + 80
(For an hour.
Cost = y = 60 * 1 + 80 = $ 140
One-time cost
y = 60 * 0 + 80 = $ 80
c) One hour long
Cost = y = 50* 1 + 150 = $200
One-time cost
y =50 * 0 + 150 = $ 150
d) Both plumbing businesses' prices are comparable when
50x + 150 = 60x + 80
70 = 10x
x=7 hours.
After resolving the aforementioned equations, the answer is yes.
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The cafeteria sells, at most 200 meals at day. The daily profit is moderate by p (m)=2.25m-85 where the profits a function of the number of meals sold. If the cafeteria sold 189 meals ,how much profit did they make?
Answer:340.25
Step-by-step explanation:
Given
Daily profit is given by
\(p(m)=2.25m-85\)
If the number of meals sold is 189
Put \(m=189\) in profit function
\(\Rightarrow p(189)=2.25\times 189-85\\\Rightarrow p(m)=425.25-85=340.25\)
In summer2021, electric power at peak usage times costs about 0.64 $/kWh ≈ 1.8 × 10−7 $/J. An ordi-
nary electrically-powered device in a home might operateat 110 V and 0.12 A. What is the cost per second to power
such a circuit during the peak usage period?
The cost per second to power such a circuit during the peak usage period is approximately \(2.376 x 10^-6\)$/s. The cost per second to power the circuit during the peak usage period can be calculated using the following steps:
Calculate the power consumption of the device-The power consumption of the device can be calculated using the formula: Power = Voltage x Current. P = V x I, Substituting the given values:
P = 110V x 0.12A
= 13.2 W
Calculate the cost per second-The cost per second can be calculated using the formula:
Cost per second = Power x Cost per Joule
C = P x CC
= 13.2 W x 1.8 x \(10^-7\) $/J
≈ 2.376 x 10^-6 $/s
Therefore, the cost per second to power such a circuit during the peak usage period is approximately 2.376 x\(10^-6\) $/s.
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1. HL
2. ASA
3. SSS
4. SAS
Answer:
Sorry but if there is no figure of triangle then we cannot say SAS, SSS, ASA, HL.
Let Xi, i=1,2,3 be independent random variables from N(i,i2) distributions. For each of the following, use the Xi's to construct a statistic with the indicated distribution.
(a) chi-squared distribution with v=3 degrees of freedom.
(b) t distribution with v=2 degrees of freedom.
(c) F distribution with v1=1 and v=2 degrees of freedom.
a) For chi-squared distribution with v=3 degrees of freedom, the statistic that can be constructed using Xi's is:
X2 = Σ i=1 3 (Xi − i)2 / 3.
X2 has chi-squared distribution with 3 degrees of freedom.
b) For t-distribution with v=2 degrees of freedom, the statistic that can be constructed using Xi's is:
T = (X1 − 1) / [(X2/2)0.5].
T has t-distribution with 2 degrees of freedom.
c) For F-distribution with v1=1 and v=2 degrees of freedom, the statistic that can be constructed using Xi's is:
F = [(X1 − 1)/1] / [(Σi=2 to 3 Xi2) / 2].
F has F-distribution with 1 and 2 degrees of freedom.
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Use the definition of a Taylor series to find the first four nonzero terms of the series for f(x) centered at the given value of a. (Enter your answers as a comma-separated list.) 7xe, a = 0 Use the definition of a Taylor series to find the first four nonzero terms of the series for f(x) centered at the given value of a. (Enter your answers as a comma-separated list.) f(x) = 2 cos(x), a = 0 Find the Maclaurin series for f(x) using the definition of a Maclaurin series. [Assume that f has a power series expansion. Do not show that R, (x) 0.] cos(3x) f(x) 8 f(x) = M8 n = 0 Find the associated radius of convergence R. R= Find the Taylor series for f(x) centered at the given value of a. [Assume that f has a power series expansion. Do not show that R, (x) +0.] f(x) = 4 cos(x), a = 57 f(x) = n = 0 Find the associated radius of convergence R. R = Find a power series representation for the function. (Give your power series representation centered at x = 0.) f(x) 6x2 + 1 f(x) = Î n = 0 Determine the interval of convergence. (Enter your answer using interval notation.)
So the Taylor series for the function informed will be:
7x, 7x², 21/6 x³, 7/6 x⁴
The function is:
f(x) = 7eˣx
WE need to use the definition of a Taylor series to find the first four non zero terms of the series for f(x) centered at the given value of a.
f(x) = ∑ (fⁿ(a) (x - a)ⁿ)/n!
The first four terms will be:
f(x) = f(0) + f(1) + f(2) + f(3)
f(x) = (f(a) (0- a)ⁿ)/n! + (f'(a) (1 - a)ⁿ)/1! + (f''(a) (2 - a)²)/2! + (f'''(a) (3 - a)³)/3!
Therefore, the four first terms are 7x, 7x², 21/6 x³, 7/6 x⁴
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Order the following numbers from greatest to least: 7.321, 7.3, 7.065, 7.65
answer:
7.65, 7.321, 7.3, 7.065
explanation:
on a number line, these numbers would be in order as shown above from right to left (decreasing value)
Answer:The order for the given decimal numbers, from the greatest to the least, is: D. 7.65, 7.321, 7.3, 7.065.
Step-by-step explanation:
Order the following numbers from greatest to least: 7.321, 7.3, 7.065, 7.65
7.065, 7.3, 7.321, 7.65
7.3, 7.321, 7.065, 7.65
7.321, 7.3, 7.65, 7.065
this is correct--> 7.65, 7.321, 7.3, 7.065
Big Time Movers charges an initial fee of $24.50, plus $12.75 an hour for their moving services. On holidays, they charge 2.5 times their regular total amount. If they made $188.75 on a job on New Year’s Day, how many hours did they work?
This equation represents the data:
2.5(12.75x + 24.50) = 188.75
Big Time Movers worked
hours on New Year’s Day.
Passage:
Big Time Movers charges an initial fee of $24.50, plus $12.75 an hour for their moving services. On holidays, they charge 2.5 times their regular total amount.
Question:
If they made $188.75 on a job on New Year’s Day, how many hours did they work?
Answer:
Big Time Movers worked "4" hours on New Year’s Day.
Step-by-step explanation:
I did the instruction on edge 202 and got it right
Calcium-41 is being used in studies testing the effectiveness of drugs for preventing osteoporosis. The half-life of calcium-41 is 100,000 years. If 20 grams of calcium-41 are present initially, how long would it take until only 2 grams
remains?
Answer:
332,193 years
Step-by-step explanation:
From the question above, we are to calculate the time in an half life question, hence, the formula is given as
t = In(Nt/No) ÷ -(In2/t½)
Where
t = time is takes for an substance to decay or reduce
Nt = Amount of sample after time = 2g
No = Initial amount of sample = 20g
t½ = Half life = 100,000 years
Hence,
t = In(2/20) ÷ (In 2/ 100,000)
t = 332192.80948874 years
Approximately = 332,193 years
byron is 5cm taller than aaron, but 10cm shorter than caron. darren is 10cm taller than caron, but 5cm shorter than erin. which of the following statements is true?
Byron is 5cm taller than Aaron, but 10cm shorter than Caron. Darren is 10cm taller than Caron, but 5cm shorter than Erin. We are asked to determine which of the following statements is true.
To solve the problem, we can start by setting up a system of equations based on the given information.
Let a represent Aaron's height, and we can express the other heights in terms of a. Then, we get:
Byron's height = a + 5
Caron's height = a + 15
Darren's height = a + 25
Erin's height = a + 30
Now, we can see that the difference in height between Byron and Caron is 10cm. Therefore, we can write:
(a + 5) - (a + 15) = 10
Simplifying this equation gives:
-10 = -10
This is true, so we know that our equations are consistent with the given information.
Next, we can compare Darren's height to Erin's height. We are told that Darren is 5cm shorter than Erin. Therefore, we can write:
(a + 25) - (a + 30) = -5
Simplifying this equation gives:
-5 = -5
In conclusion, we can see that the information given in the problem is consistent, and we have used it to set up a system of equations. We can also see that Darren is shorter than Erin, so the true statement is: "Erin is taller than Darren."
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Isaiah brought two dozen donuts to a class party. Half of the donuts had vanilla frosting with sprinkles, 2 had strawberry frosting with cream filling, and the rest had chocolate frosting with sprinkles. What fraction of the donuts had sprinkles? There are 12 donuts in a dozen.
Answer:
22/24
ALL TOGETHER there is 24 donuts.
take half of 24, or 24 divided by 2, and you get 12.
so we know 12 of the donuts are vanilla with sprinkles.
then 2 had strawberry frosting and the rest had chocolate and sprinkles.
we took 12 away so we only have twelve left and if 2 of those 12 are strawberry with no sprinkles and the rest are chocolate WITH sprinkles, this means 10 are chocolate with sprinkles.
so 10 chocolate and sprinkles +12 vanilla and sprinkles=22 donuts with sprinkles out of 24 donuts total
Answer:
22/24
Step-by-step explanation:
Can you help with this?
Given:
Diagonal of a square = 24 inches
To find:
The perimeter of the given square.
Solution:
Let a be the edge of the square.
Then, the diagonal of the square is
\(d=\sqrt{2}a\)
Diagonal of a square = 24 inches
\(24=\sqrt{2}a\)
\(\dfrac{24}{\sqrt{2}}=a\)
\(\dfrac{24}{\sqrt{2}}\times \dfrac{\sqrt{2}}{\sqrt{2}}=a\)
\(\dfrac{24\sqrt{2}}{2}=a\)
\(12\sqrt{2}=a\)
The perimeter of the square.
\(Perimeter=4a\)
\(Perimeter=4(12\sqrt{2})\)
\(Perimeter=48\sqrt{2}\)
Therefore, the perimeter of the square is \(48\sqrt{2}\).
An architect is designing new housing structures for the primate section at the zoo. Her plan is shown below. Which animals will live in a building that is similar to the main primate house? A orangutans B chimpanzees C gibbons D gorillas
Answer:
A
Step-by-step explanation:
:p
Write the standard equation for a circle with center (0,0) and radius 8
Answer:
Step-by-step explanation:
hello : an equation is :
x²+y²=64
1. a certain college wants to estimate the amount of time students, who live off campus, spend commuting to classes each week. a random sample of 45 off-campus students is surveyed. a) identify the population and sample for this study. b) what data is being collected? what type of data is this? c) what type of study is this?
The objective of this research is to collect data on a specific component of the off-campus student population.The amount of time they spend travelling to courses each week.
a) The population for this study is all off-campus students at this college, and the sample is a random sample of 45 off-campus students who are polled. The sample is chosen at random to be representative of the entire population.
b) The data being gathered is the amount of time the surveyed students spend each week travelling to school. Because it reflects a numerical measurement, this is quantitative data. This information will be used to calculate the average commuting time for off-campus students and to identify any possible concerns or areas for improvement in commuting.
c) This is a descriptive research, since it seeks to characterise and summarise the features of the off-campus student population in terms of commuting time. The study's purpose is to better understand off-campus students' commuting patterns and gather ideas into how to enhance their commuting experience.
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A random number generator is used to create a list of 300 single-digit numbers. Of those 300 numbers, 146 are odd
and 154 are even. The number 8 was generated 22 times.
What is the experimental probability of an even number other than 8 being generated? Write your answer as a
decimal to the nearest hundredths place.
O 0.23
O 0.35
O 0.44
O 0.52
The experimental probability of an even number other than 8 being generated is, 0.44
What is mean by Probability?The term probability refers to the likelihood of an event occurring. Probability means possibility. It is a branch of mathematics that deals with the occurrence of a random event. The value is expressed from zero to one.
Given that;
Total number of numbers = 300
Number of even numbers = 154
Number of eight = 22
Hence, Number of even numbers other than 8 is,
154 - 22 = 132
Thus, Probability is,
= [number of even numbers other than eight] / [total number of numbers]
= 132/300
= 0.44
Thus, The experimental probability of an even number other than 8 being generated is, 0.44
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Pls help me ASAP I DONT know what to put. I only have 6 minutes to answer pls help
Answer:
YOU CHEAT ON QUIZ
Step-by-step explanation:
WHY YOU CHEAT BAD
complete the square to rewrite the following equation. identify the center and radius of the circle. you must show all work and calculations to receive credit. x2 − 4x y2 8y
The equation \(x^2 - 4x + y^2 + 8y\) can be rewritten as \((x - 2)^2 + (y + 4)^2 = 20\), and the center of the circle is \((2, -4)\) with a radius of \(2sqrt(5).\)
To complete the square and rewrite the equation, let's focus on the terms involving x and y separately.
For \(x^2 - 4x\), we can complete the square by taking half of the coefficient of x, which is -4, and squaring it: \((-4/2)^2 = 4\). Add this value to both sides of the equation:
\(x^2 - 4x + 4 = 4\)
For y^2 + 8y, we can complete the square by taking half of the coefficient of y, which is 8, and squaring it: (8/2)^2 = 16. Add this value to both sides of the equation:
\(y^2 + 8y + 16 = 16\)
Now, let's rewrite the equation using these completed squares:
\((x^2 - 4x + 4) + (y^2 + 8y + 16) = 4 + 16\)
Simplifying the equation:
\((x - 2)^2 + (y + 4)^2 = 20\)
Now we can identify the center and radius of the circle. The equation is in the form\((x - h)^2 + (y - k)^2 = r^2\), where (h, k) represents the center of the circle, and r represents the radius.
From our equation, we can see that the center of the circle is (2, -4) and the radius is \(sqrt(20)\), which simplifies to \(2sqrt(5)\).
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The equation \(\[ x^2 - 4x + y^2 + 8y \]\) can be rewritten as \(\[ (x - 2)^2 + (y + 4)^2 = 20 \]\). The center of the circle is (2, -4), and the radius is \(\[ \sqrt{20} \]\).
To rewrite the given equation using the method of completing the square, we need to rearrange the terms and add a constant value on both sides of the equation. Let's start with the given equation:
\(\[ x^2 - 4x + y^2 + 8y \]\)
To complete the square for the x terms, we take half of the coefficient of x (-4) and square it. Half of -4 is -2, and (-2)² is 4. We add this value inside the parentheses to both sides of the equation:
\(\[ x^2 - 4x + 4 + y^2 + 8y \]\)
For the y terms, we follow the same process. Half of the coefficient of y (8) is 4, and (4)² is 16. We add this value inside the parentheses to both sides of the equation:
\(\[ x^2 - 4x + 4 + y^2 + 8y + 16 \]\)
Now, we can rewrite the equation as:
\(\[ (x^2 - 4x + 4) + (y^2 + 8y + 16) = 4 + 16 \]\)
The first parentheses can be factored as a perfect square: (x - 2)².
Similarly, the second parentheses can be factored as a perfect square: (y + 4)². Simplifying the right side gives us:
\(\[ (x - 2)^2 + (y + 4)^2 = 20 \]\)
Comparing this equation to the standard form of a circle, \(\[ (x - h)^2 + (y - k)^2 = r^2 \]\), we can identify the center and radius of the circle. The center is given by (h, k), so the center of this circle is (2, -4).
The radius, r, is the square root of the number on the right side of the equation, so the radius of this circle is \(\[ \sqrt{20} \]\).
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Use propositional logic to prove that the argument is valid. Do not use truth tables (A + B) ^ (C V -B) ^(-D-->C) ^ A D Please use the following substitute operators during your quiz: ^: &
v: I
¬: !
-->: ->
To prove that the argument is valid using propositional logic, we can apply logical rules and deductions. Let's break down the argument step by step:
(A + B) ^ (C V -B) ^ (-D --> C) ^ A ^ D
We will represent the proposition as follows:
P: (A + B)
Q: (C V -B)
R: (-D --> C)
S: A
T: D
From the given premises, we can deduce the following:
P ^ Q (Conjunction Elimination)
P (Simplification)
Now, let's apply the rules of disjunction elimination:
P (S)
A + B (Simplification)
Next, let's apply the rule of disjunction introduction:
C V -B (S ^ Q)
Using disjunction elimination again, we have:
C (S ^ Q ^ R)
Finally, let's apply the rule of modus ponens:
-D (S ^ Q ^ R)
C (S ^ Q ^ R)
Since we have derived the conclusion C using valid logical rules and deductions, we can conclude that the argument is valid.
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Someone please help me, what is 13x + 5 - 8x - 3?
Answer:
5x
2
Step-by-step explanation:
Answer:
14
Step-by-step explanation:
What is the product of 7x -4 and 8x +8
Answer:
56x-32
Step-by-step explanation:
7x-4 Times 8x+8
7xtimes8x
56x-4times8
56x-32
Instructions: Translate the following statements into algebraic
expressions
One-fourth of z is subtracted from 6.
Answer: 6 - 1/4 z or 6 - z/4
Step-by-step explanation: One fourth of z can be represented as 1/4 z
(or z/4). When something is subtracted from something else, it can be represented as the second value given minus the first value given.
6 - 1/4 z or 6 - z/4
What does algebraic mean in math?Algebraic means of and relating to the algebra. The words “algebraic” or “algebra” have so much different meanings in mathematics, still their meanings aren't as variable like the meanings of the words such as “go” have in the English. Algebra has to do with operations, especially addition or multiplication and summerizing.
One fourth of z can be represented as 1/4 of z (or z/4)
When something is subtracted from something else, this can be represented as the 2nd value given minus the 1st value given
so One fourth of z is 1/4 of z (or z/4)
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The population of Happyland is 15.8 Happys per acre exactly 553 Happys live in Happyland how many acres is Happyland enter only a numerical value in the answer blank
Answer:
35 acres
Step-by-step explanation:
We have 15.8 happys per acre and the we have exactly 553 happys living in happy land.
To calculate the number of acres, we just need to divide the number of happys we have by the number by the number of happys per acre
Mathematically, that would be 553/15.8 = 35 acres
Happyland have 35 acres of Land.
Given to us:
Population of Happyland = 553 Happys
Population of Happyland per acre = 15.8 Happys per acre,
Land with Happyland in acres:
\(\rm {Land with Happyland in acres =\dfrac{ Total\ number\ of\ Happys}{Population\ of\ Happyland\ per\ acre}}\)
Putting in the value we get,
\(\rm {Land with Happyland in acres =\dfrac{ Total\ number\ of\ Happys}{Population\ of\ Happyland\ per\ acre}}\\\\\rm {Land with Happyland in acres =\dfrac{553}{15.8}}\\\\\rm {Land with Happyland in acres = 35 acres\)
Hence, Happyland have 35 acres of Land.
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find m
pleaseeeeeeee hellppp
Answer:
maybe 95?
Step-by-step explanation:
Answer:
B or A but mainly B
Step-by-step explanation:
I WILL GIVE BRAINLIEST PLEASE HELP!!!! If the sun is 56 degrees above the horizon, find the length of the shadow cast by a building 58 feet tall. Round your answer to the nearest tenth.
Answer:45
Step-by-step explanation:
What is the inverse function of f(x) = x/x-2?