X3 = -18.8 + 4.0x, + 9.3x4 - 1.3x, (a) Which variable is the response variable? Which variables are the explanatory variables? (b) Which number is the constant term? List the coefficients with their corresponding explanatory variables. (c) If x1 X3? = 10, X4 = -4, and x- = 4, what is the predicted value for (d) Explain how each coefficient can be thought of as a "slope" under certain conditions. Suppose x, and x7 were held at fixed but arbitrary values. If x4 increased by 1 unit, what would we expect the corresponding change in x3 to be? If x4 increased by 3 units, what would be the corresponding expected change in x3? If X4 decreased by 2 units, what would we expect for the corresponding change in x3? (e) Suppose that n = 11 data points were used to construct the given regression equation and that the standard error for the coefficient of x¼ is 0.857. Construct a 90% confidence interval for the coefficient of x4. (f) Using the information of part (e) and level of significance 1%, test the claim that the coefficient of xĄ is different from zero. Explain how the conclusion has a bearing on the regression equation.

Q: 4 + (-7) + (-5)= 10 + (-3) + (-8)= 85 + (-15) + (-20) + 12= 60 + (-50) + (-30) + 25= 17 + (-4) + 2 +…

A: To simplify the given additions and subtractions:

Q: What would be the notation for the mean of the x values?

A: From the given information, the values are denoted by the variable x.Let us consider the number of…

Q: 7/13p=-14/11

A:

Q: Find A + B. [-3 3 -91 A =7 6. B= 5 4 2 4 6 8 4 2

A: To find A+B

Q: then If A(-3-20) = Au = -2 ---A 2 and Av= -1 3 2

A:

Q: let B= [-1 2 7 -3] Find -3B

A:

Q: a/a-6 = -2/a-1

A: Here we have to find the value of 'a'.

Q: 1/4+1/5-1/6+1/7-1/8

A: Given, -1/4+1/5-1/6+1/7-1/8

Q: Find a21 of A-1 Find a22 of A-1

A:

Q: then A-1 A 7 -8

A: Where  is the transpose matrix of the cofactors.The expression for the cofactors is:

Q: -7 -6 -5 -4 4 3 2 1 -1 -2 -3 -4 1 2 3 4 5 6

A: To find the rang by the given graph.

Q: a. Sx-14= 8r+4

A: Given  a.) 5x -14 = 8x+4 b.) -12(-4x + 3 ) -2 = 1 +12 x

Q: A professor use chi-square test to examine the relationship between smoking and colon cancer. He…

A: Number of rows, a = 2 Number of columns, b = 2

Q: (-3z2 - 4z + 7) – (2z? + 2z - 1) = -5z - 6z + 8 O True False

A:

Q: If A = A-1 = -5 15 4 -11 -1 3 14 -12, then 3

A:

Q: What is the opposite of -1?

A: What is the opposite of -1?

Q: 7 -18 -2 -3 A = 3 P = -8 -1 -1

A:

Q: Find a21 of A-1 Find a22 of A-1

A:

Q: 5 ( 1.1x + 9 ) = 2 ( -6 - 0.1x )

A: First we solve the bracket and then we rearrange the equation. All the variable are arrange in one…

Q: What is the independent variable and the dependent variable?

A: Dependent variable is the response variable that we observe from the subjects under study, and…

Q: Alex’s score for a game is given by the expression 10 - 9.2 - (2.9). Beth’s score for the same game…

A:

Q: -2 1 -9 4 -4 6 Let A = 3 6 10 -10 9 4 What is the value of (A) 16?

A: We have given a matrix  A  A=(−23​16​−910​4−10​−49​64​) any element of matrix A is represented by…

Q: 8*(12-5)=

A:

Polynomials

Try substituting 1. You will get 6 and not 0. Try other real values also. What About -2? Let us check.