# Solved >   Exhibit 15-2 A regression model between sales:1414776 …

Exhibit 15-2

A regression model between sales (Y in \$1,000), unit price (X1 in dollars) and television advertisement (X2 in dollars) resulted in the following function:

For this model SSR = 3500, SSE = 1500, and the sample size is 18.

51.Refer to Exhibit 15-2. To test for the significance of the model, the p-value is

a.less than 0.01

b.between 0.01 and 0.025

c.between 0.025 and 0.05

d.between 0.05 and 0.10

52.Refer to Exhibit 15-2. The multiple coefficient of correlation for this problem is

a.0.70

b.0.8367

c.0.49

d.0.2289

Exhibit 15-2

Exhibit 15-3

In a regression model involving 30 observations, the following estimated regression equation was obtained:

For this model SSR = 700 and SSE = 100.

53.Refer to Exhibit 15-3. The coefficient of determination for the above model is approximately

a.-0.875

b.0.875

c.0.125

d.0.144

54.Refer to Exhibit 15-3. The computed F statistic for testing the significance of the above model is

a.43.75

b.0.875

c.50.19

d.7.00

55.Refer to Exhibit 15-3. The critical F value at 95% confidence is

a.2.53

b.2.69

c.2.76

d.2.99

56.Refer to Exhibit 15-3. The conclusion is that the

a.model is not significant

b.model is significant

c.slope of X1 is significant

d.slope of X2 is significant

Exhibit 15-4

a.

b.

c.

d.

57.Which equation describes the multiple regression model?

a.Equation A

b.Equation B

c.Equation C

d.Equation D

58.Which equation gives the estimated regression line?

a.Equation A

b.Equation B

c.Equation C

d.Equation D

59.Which equation describes the multiple regression equation?

a.Equation A

b.Equation B

c.Equation C

d.Equation D

Exhibit 15-5

Below you are given a partial Minitab output based on a sample of 25 observations.

CoefficientStandard Error

Constant145.32148.682

X125.6259.150

X2-5.7203.575

X30.8230.183

60.Refer to Exhibit 15-5. The estimated regression equation is

a.

b.

c.

d.

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