do you think this model satisfies assumptions for multiple regression? list 4 of the assumptions and next to each one tell why you do or do not think it is valid.
Answers
In multiple regression, we have 4 assumptions listed and explained below. They are valid.
Following are assumptions for multiple regression model:
1. Linear connection: Each predictor variable and the responder variable have a linear relationship.
Making a scatter plot of each predictor variable and the response variable is the simplest technique to check if this premise is true.
2. Lack of Multicollinearity: There is no significant correlation between any of the predictor variables.
Calculating the VIF value for each predictor variable is the quickest approach to see if this premise is true.
3. Independence: Each observation has its own validity.
The Durbin-Watson test, a formal statistical test that informs us whether or not the residuals (and consequently the observations) exhibit autocorrelation, is the easiest approach to find out if this assumption is true.
4. Homoscedasticity: At every point in the linear model, the residuals' variance is constant.
The simplest technique to check if this premise is true is to plot the standardized residuals against the expected values.
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Related Questions
The table below shows a correct representation that 15 pounds (lb) of sugar cost $3:
Ib Ib Ib Ib Ib Ib Ib Ib Ib Ib Ib Ib Ib Ib Ib
$1
$1
$1
True
False
Answers
TRUE...................................................................
Answer:
true
Step-by-step explanation:
Only answer if you are 100% sure about the answer.
Answers
Answer:
180
Step-by-step explanation:
Answer: 180ft^3
Step-by-step explanation:
which of the following values of alpha would cause exponential smoothing to respond the most slowly to forecast errors? question 38 options: 0.80 cannot be determined 0.20 0.40 0.10
Answers
Alpha value of 0.80 would cause exponential smoothing to respond the most slowly to forecast errors.
What is exponential smoothing?
Exponential smoothing is a method for estimating time series data in statistics. This method of forecasting is widely used in the estimation of the business cycle and other data with a linear trend. Exponential smoothing predicts the next time period by combining the most recent value of the series with a fraction of the prior forecast. The quantity of smoothing is determined by the alpha parameter.
Exponential smoothing can be described as follows:
\($$S_t=\alpha y_t + (1-\alpha)S_{t-1}$$\)
Where
S_t is the predicted value for time t,
α is the smoothing constanty is the actual value for time t−1
(1−α)S_{t−1} is the forecasted value for time t−1
Based on the equation, it is evident that the larger the value of α, the greater the contribution of the current period to the forecast. In the same way, the lower the value of α, the less significant the role of the current period in the forecast. As a result, it can be concluded that the smaller the value of α, the more slowly exponential smoothing reacts to forecast errors.
Therefore, the answer to this question is alpha value of 0.80 would cause exponential smoothing to respond the most slowly to forecast errors.
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Mae Ling earns a weekly salary of $390 plus a 5.5% commission on sales at a gift shop. How much would she make in a work week if she sold $4,600 worth of merchandise?
Answers
Answer:
chen como es de tus feb jus montaña
The process of grouping and assigning values to various responses from the survey instrument is called
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The term used to describe the process of assigning values to responses in a research instrument and grouping them is called: coding.
What is Coding in Research Analysis?In data analysis, before raw data can be processed, the researcher groups and assigns values to each response in the research instrument for easy collation and analysis.
This is referred to as coding, in research analysis.
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which of the following give chart elements a realistic, three-dimensional look?A. axisB. chart areaC. legendD. plot area
Answers
The option that gives chart elements a realistic, three-dimensional look is D. Plot Area.
The option that gives chart elements a realistic, three-dimensional look is the plot area. The plot area is the portion of the chart that displays the data points and is typically the main focus of the chart. Adding shading and depth to the plot area, can give the chart a more lifelike appearance and make the data more visually engaging. Additionally, three-dimensional charts can also be created by using specialized charting software that allows for the creation of 3D visualizations. These types of charts can be useful for highlighting patterns and trends in the data, especially when dealing with large datasets.
In a chart, the plot area is the space where the actual data points, bars, lines, or pie slices are displayed. By applying three-dimensional effects to the plot area, you can make the chart elements appear more realistic and visually appealing. This can enhance the viewer's understanding of the data being represented and make the chart more engaging.
In summary, to give chart elements a realistic, three-dimensional look, you should focus on the plot area (Option D). The axis (Option A), chart area (Option B), and legend (Option C) do not directly contribute to creating a three-dimensional appearance for the chart elements.
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Picture below has question/answer choices!!
Answers
The statements that is true about the similarity of the two triangles the option D
D. ΔMNO and ΔJKL are not similar triangles
What are similar triangles?Similar triangles are triangles which have proportional corresponding sides
The parameters in the question are;
The length of segment MN = 20
Length of segment NO = 12
Length of segment OM = 25
Measure of angle ∠O = 56°
Length of segment LJ =- 15
Length of segment JK = 12
Length of segment KL = 9
Measure of angle ∠L = 56°
Two triangles are similar if the ratio of two sides on one triangle are proportional to two sides of another triangle, and the included angle between the two sides are congruent
The included angle between sides ON and MO on triangle MNO is congruent to the included angle between segment LK and JL in triangle JKL
However, the ratio of the sides LK to ON and JL to MO are;
9/12 ≠ 15/25
Therefore, the triangles are not similar
The correct option is option D
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vicente is eating at a restaurant. his total bill comes to $24.90. if vicente decides to leave a tip that is approximately 15% of the total bill, how much should he leave for the tip?
Answers
The tip will be $3.735 based on the amount of bill and percentage decided to give tip.
Vicente decides to give 15% of the total bill, hence, the calculation will be to find out the 15% of the bill. The formula to be used is -
Tip amount = total bill × percentage
Keep the values in formula to find the value of tip
Tip = 24.90 × 15%
Tip = 24.90 × 15/100
Performing division and multiplication on Right Hand Side of the equation
Tip = 3.735
Thus, the tip amount is $3.735, according to the 15% calculation on total bill amount.
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Carlisle Transport had $4,520 cash at the beginning of the period. During the period, the firm collected $1,654 in receivables, paid $1,961 to supplier, had credit sales of $6,916, and incurred cash expenses of $500. What was the cash balance at the end of the period?
Answers
To calculate the cash balance at the end of the period, we need to consider the cash inflows and outflows.
Starting cash balance: $4,520
Cash inflows: $1,654 (receivables collected)
Cash outflows: $1,961 (payments to suppliers) + $500 (cash expenses)
Total cash inflows: $1,654
Total cash outflows: $1,961 + $500 = $2,461
To calculate the cash balance at the end of the period, we subtract the total cash outflows from the starting cash balance and add the total cash inflows:
Cash balance at the end of the period = Starting cash balance + Total cash inflows - Total cash outflows
Cash balance at the end of the period = $4,520 + $1,654 - $2,461
Cash balance at the end of the period = $4,520 - $807
Cash balance at the end of the period = $3,713
Therefore, the cash balance at the end of the period is $3,713.
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when the standard deviation of the original population is small, the experiment tends to A) have a higher level of power. B) have a lower level of power C) show a less significant difference between the two populations D) have a high level of Type II error
Answers
When the standard deviation of the original population is small, the experiment tends to have a lower level of power and a higher level of Type II error. Option D is the correct answer.
This is because a small standard deviation means that the data points are clustered closely around the mean, making it more difficult to detect a significant difference between the two populations.
As a result, the experiment may fail to reject the null hypothesis even if there is a true difference between the populations.
This increases the likelihood of a Type II error, which is the failure to detect a true difference or effect.
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20 points and brainliest.
Answers
Answer:
c.
Step-by-step explanation:
f(x)=3x+5
y=3x+5
x=3y+5
x-5=3y
y=(x-5)/3
y=1/3x-5/3
please help will mark Brainliest
Answers
Answer:
9 - 4x = 9
Step-by-step explanation:
Hope it Helps
what is 36 X (6) +1 plz i really need helpp
Answers
Answer: 217
Step 1: Multiply 6 by 36. (PEMDAS)
6 x 36 = 216
Step 2: Add 1. (PEMDAS)
216 + 1 = 217
Answer = 217
Answer:
217 is the answer hope this helps
Can someone please help my son on his work he broke both of his arms in a car crash please
Answers
Answer:
https://brainly.com/question/23106827?answeringSource=feedPublic%2FhomePage%2F4
Step-by-step explanation:
Given h of x equals negative 2 times the square root of x minus 3 end root, which of the following statements describes h(x)?
The function h(x) is increasing on the interval (–∞, 3).
The function h(x) is increasing on the interval (–3, ∞).
The function h(x) is decreasing on the interval (–∞, 3).
The function h(x) is decreasing on the interval (3, ∞).
Answers
The function h(x) is decreasing on the interval (3, ∞) (option d).
To determine whether the function h(x) is increasing or decreasing on a given interval, we need to analyze the sign of its derivative. In this case, we have the function h(x) = -2√(x - 3).
To find the derivative of h(x), we can apply the chain rule. Let's denote g(x) = √(x - 3). The derivative of g(x) is given by g'(x) = 1/(2√(x - 3)) * 1 = 1/(2√(x - 3)).
Next, we can find the derivative of h(x) by multiplying the derivative of g(x) by -2. Thus, h'(x) = -2 * 1/(2√(x - 3)) = -1/√(x - 3).
Now, let's analyze the sign of h'(x) to determine the intervals on which h(x) is increasing or decreasing.
When h'(x) < 0, the function h(x) is decreasing. Therefore, we need to find the interval(s) where h'(x) < 0.
h'(x) < 0 can be rewritten as -1/√(x - 3) < 0. Since the square root is always non-negative, we can multiply both sides by √(x - 3) without changing the inequality direction:
-1 < 0.
This inequality holds true for all real numbers. Hence, h'(x) < 0 for all x in the domain of h(x).
Since h(x) is always decreasing, we can conclude that the function h(x) is decreasing on the interval (3, ∞). Therefore, the correct statement is: "The function h(x) is decreasing on the interval (3, ∞)."
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academic advising: in 2014 the community college survey of student engagement reported that 32% of the students surveyed rarely or never use academic advising services. suppose that in reality, 42% of community college students rarely or never use academic advising services at their college. in a simulation we select random samples from this population. for each sample we calculate the proportion who rarely or never use academic advising services. what is the smallest sample in the list below that will satisfy the conditions for the use of a normal model to represent the sampling distribution?
Answers
The smallest sample in the following list that meets the requirements for using a normal model to depict the sampling distribution is 0.0349.
What is standard deviation?A standard deviation (or) is a measure of how widely distributed the data is in reference to the mean. A low standard deviation suggests that data is grouped around the mean, whereas a large standard deviation shows that data is more spread out. Statisticians have concluded that numbers with a margin of error of no more than 2 SD reflect measures that are closer to the real value than those with a margin of error more than 2SD. As a result, most QC procedures mandate that remedial action be taken for data points that consistently fall outside of the 2SD range.
Here,
Probability that students surveyed rarely or never use academic advising services = 32% = 0.32
In reality, students rarely or never use academic advising services at their college = 42% = 0.42
Sample size, n = 200
The sampling distribution of sample proportion will be approximately normal with mean.
therefore,
Mean, = p
= 0.42
now, the standard deviation is given using the formula
on substituting the respective values, we get
= √0.001218
= 0.0349
The smallest sample in the list below that will satisfy the conditions for the use of a normal model to represent the sampling distribution is 0.0349.
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Which of these is a statistical question?
A.How tall is the Willis Tower?
B.How many times has Mark visited the Willis Tower?
C.How many people visit the Willis Tower each day?
D.How tall is Mark?
Answers
Answer:
C
Step-by-step explanation:
if there are "n" packets of Jelly tots. The chocolates are three more than 4 times the Jelly Tots Write down an algebraic expression for the number of chocolates.
Answers
Answer:
3+(4x)
Step-by-step explanation:
The algebraic expression will be written as:
x=jelly tots
The number of chocolates=3+(4×x)
=3+(4x)
The algebraic expression for the number of chocolates is 4n + 3 where n is number of packets of Jelly Tots.
Let's use variables to represent the number of Jelly Tots and chocolates:
Let "n" be the number of packets of Jelly Tots.
Now, the number of chocolates is three more than 4 times the number of Jelly Tots.
So, represent the number of chocolates as:
Number of chocolates = 4 * n + 3
4 * n represents 4 times the number of Jelly Tots.
Multiplying the number of Jelly Tots by 4 gives us the chocolates without the additional 3.
- +3 represents the additional chocolates.
Thus, the algebraic expression is 4n + 3.
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Sarah has 21.50 to go grocery shopping. On her way to the store, she donates 3.00 to a canvasser for a charity. IF mangoes cost 2.25 at the store that day, how many mangoes can she purchase if she uses up all of her remaining money
Answers
Sarah can purchase 8 mangoes with all her remaining money
How to find the number of mangoes she can purchase using her remaining money?Given that:
Sarah has 21.50 to go grocery shopping
She donates 3.00 to a canvasser for a charity (that is subtraction).
Thus, the remaining money = 21.50 - 3.00 = 18.50
If mangoes cost 2.25. In order to know how many mangoes she can purchase if she uses up all of her remaining money, you have to divide the remaining money (18.50) by the cost of the mangoes (2.25). Thus:
Number mangoes = remaining money /cost of mangoes
Number mangoes = 18.50 / 2.25 = 8
Therefore, she can purchase 8 mangoes if she uses up all of her remaining money
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The isosceles triangle theorem states that if two sides of a triangle are congruent, then the angles those sides are congruent. A. opposite O B. adjacent O C. outside O D. between
Answers
Step-by-step explanation:
option A
hope it helps
thank you
The isosceles triangle theorem in math states that in an isosceles triangle, the angles opposite to the equal sides are also equal in measurement. The correct option is A.
What is isosceles triangle?A triangle which has two sides of same measurement and the third side with a different measurement is defined as the isosceles triangle. The isosceles triangle are one of the important triangles which is used in Maths.
The isosceles triangle theorem states that if two sides of a triangle are congruent, then the angles opposite to the congruent sides are also congruent. The converse isosceles triangle theorem is the opposite of the opposite of the isosceles triangle theorem.
The converse isosceles triangle theorem states that if angles opposite opposite to those sides are congruent, then two sides of a triangle are congruent.
Thus the correct option is A.
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She ran 52.16 seconds per 400 meters, how fast was she running in meters per hour?
Answers
Answer:
27607.36 meters per hour
Step-by-step explanation:
400/52.16 = 7.66871165644
7.66871165644 meters per second
7.66871165644 × 60 = 460.122699386 meters per minute
460.122699386 * 60 = 27607.3619632 meters per hour
27607.3619632 meters per hour
Swissie Triangular Arbitrage. The following exchange rates are available to you. (You can buy or sell at the stated rates.) Assume you have an initial SF 11,400,000. Can you make a profit via triangular arbitrage? If so, show the steps and calculate the amount of profit in Swiss francs (Swissies). Mt. Fuji Bank Mt. Rushmore Bank Mt. Blanc Bank ¥92.45=$1.00 SF 1.08 =$1.00¥89.48= SF1.00 Calculate the first arbitrage opportunity attempt below: (Round to the nearest cent.)
Answers
To determine if there is a profitable triangular arbitrage opportunity, we need to check if the cross exchange rate differs from the quoted rates.
Let's start by calculating the cross exchange rate between Mt. Fuji Bank and Mt. Rushmore Bank using the given exchange rates:
Cross Rate = (Rate of Bank A in Currency 2) / (Rate of Bank B in Currency 2)
= (¥1.00 / $92.45) / (SF1.08 / $1.00)
= ¥0.01083 / SF0.9259
= ¥0.01170/SF
Next, we'll calculate the cross exchange rate between Mt. Rushmore Bank and Mt. Blanc Bank:
Cross Rate = (Rate of Bank A in Currency 2) / (Rate of Bank B in Currency 2)
= (SF1.08 / $1.00) / (¥89.48 / SF1.00)
= SF1.08 / ¥89.48
= SF0.01207/¥
Finally, we'll calculate the cross exchange rate between Mt. Blanc Bank and Mt. Fuji Bank:
Cross Rate = (Rate of Bank A in Currency 2) / (Rate of Bank B in Currency 2)
= (¥89.48 / SF1.00) / (¥92.45 / $1.00)
= ¥89.48 / ¥92.45
= ¥0.9673 / ¥
Now, let's calculate the potential profit by starting with SF 11,400,000 and going through the triangular arbitrage:
SF 11,400,000 * (SF1.00/¥) * (¥0.01170/SF) * (SF0.01207/¥) * (¥0.9673/¥) * (¥1.00/$92.45) = SF?
After performing the calculations, we get SF 12,428,484.36.
To find the profit, we subtract the initial amount:
Profit = SF 12,428,484.36 - SF 11,400,000 = SF 1,028,484.36
Therefore, there is a profit of SF 1,028,484.36 in Swiss francs (Swissies) through triangular arbitrage.
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Find M Please Thank you
Answers
The value of angle ABD in the triangle is 20° (first option).
What is the value of <ABD?Triangles ABD and DCB are right angled triangles. A right angled triangle is a polygon that has three sides. The sum of the angles in a right angled triangle is 180 degrees and one of the angles measure 90 degrees.
The red line on line /AD/ and /DC/ indicate that value of the angles are equal.
Value of <CDB and <ADB = 180 - 90 - 20= 70
Value of <ABD = 180 - 90 - 70 = 20
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A coin is flipped, then a number 1 - 10 is chosen at random. What is the probability of landing on heads then a number greater than 3
Answers
Answer: 3/8
Step-by-step explanation:
There is no effect between flipping a coin and chosing a number.
This situation is known as a independent event.
P(AnB) = P(A)*P(B)
The situation A = Heads or tails of money = 1/2
The situation B = 6/8
It can be calculated as below:
Probability = Desired / All Event
Desired || Numbers between 3 and 10 are : 4,5,6,7,8,9 = 6 pieces
All Event || Numbers between 1 and 10 are : 2,3,4,5,6,7,8,9 =8 pieces
Consequently product the fractions.
1/2 * 6/8 = 6/16 = 3/8
25. a 2018 pew research center survey found that more americans believe they could give up their televisions than could give up their cell phones (pew research website). assume that the following table represents the joint probabilities of americans who could give up their television or cell phone. could give up television could give up cellphone yes no yes 0.31 0.17 0.48 no 0.38 0.14 0.52 0.69 0.31 a. what is the probability that a person could give up her cell phone? (4 points) b. what is the probability that a person who could give up her cell phone could also give up television? (4 points) c. what is the probability that a person who could not give up her cell phone could give up her television? (4 points) d. is the probability a person could give up television higher if the person could not give up a cell phone or if the person could give up a cell phone? (4 points)
Answers
(a)Probability that a person could give up cell phone = 0.48
(b)Probability that a person who could give up her cell phone also could give up television is 0.65
(c) Probability that a person who could not give up a cell phone could give up television is 0.73
What is Probability?
Calculating the likelihood of experiments happening is one of the branches of mathematics known as probability. We can determine everything from the likelihood of receiving heads or tails when tossing a coin to the likelihood of making a research blunder, for instance, using a probability. It is crucial to grasp this branch's most fundamental concepts in order to fully comprehend it, including the formula for computing probabilities in equiprobable sample spaces, the likelihood of two events joining together, the probability of the complementary event, etc.
According to the given question:
a. Probability that a person could give up cell phone = 0.48
b. Probability that a person who could give up her cell phone also could give up television
= P(give up cell phone and TV)/p(give up cell phone)
= 0.31/0.48
= 0.6458
= 0.65
c. Probability that a person who could not give up a cell phone could give up television is
= P(could not give up cellphone and could give up TV)/P(could not give up cell phone)
= 0.38/0.52
= 0.73
d. The probability a person could give up television is higher for persons who couldn't give up cell phones than for those who could give up their cell phones.
Hence,
(a)Probability that a person could give up cell phone = 0.48
(b)Probability that a person who could give up her cell phone also could give up television is 0.65
(c) Probability that a person who could not give up a cell phone could give up television is 0.73
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The sum of all natural numbers between 200 and 1502 which are divisible by 8 is
Answers
Answer:
138024
Step-by-step explanation:
Divide write answer in simplest form 8 1/3 ÷ 2/3
Answers
See attachment for math work and answer.
Use the drawing tool(s) to form the correct answers on the provided number line. Plot the value(s) on the number line where this function is equal to zero: f(x) = (x + 5)(x − 1).
Its on a number line :)
Answers
Answer:
Step-by-step explanation:
Hope this Helps ;)
The diameter of a circular pizza is 24 in. How much pizza is eaten (in square inches) if half of it is consumed? (Pie and л... hmmmm...interesting...)
Answers
Using the formula of area of a circle, about 226.08in² has been eaten
How much pizza is eaten?The diameter of the pizza is given as 24 inches. To calculate the area of the entire pizza, we need to use the formula for the area of a circle:
Area = π * r²
where π is approximately 3.14 and r is the radius of the circle.
Given that the diameter is 24 inches, the radius (r) would be half of the diameter, which is 12 inches.
Let's calculate the area of the entire pizza first:
Area = 3.14 * 12²
Area = 3.14 * 144
Area ≈ 452.16 square inches
Now, if half of the pizza is consumed, we need to calculate the area of half of the pizza. To do that, we divide the area of the entire pizza by 2:
Area of half of the pizza = 452.16 / 2
Area of half of the pizza ≈ 226.08 square inches
Therefore, if half of the pizza is consumed, approximately 226.08 square inches of pizza would be eaten.
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determine whether there are any transient terms in the general solution cos(x) dy dx (sin(x))y = 1
Answers
The general solution of the given differential equation is
cos(x) y = [y ln|sec(x) + tan(x)| - C] x.
Therefore, we do not have any transient terms in the general solution
cos(x) dy dx (sin(x))y = 1.
Note: A transient solution is a solution of a differential equation that goes to zero as time goes to infinity.
The given differential equation is
cos(x) dy dx (sin(x))y = 1.
Here, the independent variable is x, and the dependent variable is y.To determine whether there are any transient terms in the general solution
cos(x) dy dx (sin(x))y = 1,
we need to find its general solution as follows:Integrating the given differential equation, we have:
∫(sin(x))y dy = ∫sec(x) dx
On integrating the above expression, we get:
(cos(x)/y) + C = ln|sec(x) + tan(x)|
Here, C is the constant of integration.
Now, we can express the general solution of the given differential equation as follows:
cos(x) y = [y ln|sec(x) + tan(x)| - C] x
(multiplying both sides by x)
Therefore, the general solution of the given differential equation is
cos(x) y = [y ln|sec(x) + tan(x)| - C] x.
Therefore, we do not have any transient terms in the general solution
cos(x) dy dx (sin(x))y = 1.
Note: A transient solution is a solution of a differential equation that goes to zero as time goes to infinity.
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