Question

A statistical program is recommended. The owner of a movie theater company would like to predict...

A statistical program is recommended.

The owner of a movie theater company would like to predict weekly gross revenue as a function of advertising expenditures. Historical data for a sample of eight weeks follow.

Weekly
Gross
Revenue
($1,000s)
Television
Advertising
($1,000s)
Newspaper
Advertising
($1,000s)
96 5 1.5
91 2 2
95 4 1.5
93 2.5 2.5
95 3 3.3
94 3.5 2.2
94 2.5 4.2
94 3 2.5

(a)

Use α = 0.01 to test the hypotheses

H0: β1 = β2 = 0
Ha: β1 and/or β2 is not equal to zero

for the model

y = β0 + β1x1 + β2x2 + ε,

where

x1 = television advertising ($1,000s)
x2 = newspaper advertising ($1,000s).

Find the value of the test statistic. (Round your answer to two decimal places.)

Find the p-value. (Round your answer to three decimal places.)

p-value = \

b. Use α = 0.05 to test the significance of

β1.

State the null and alternative hypotheses.

H0: β1 = 0
Ha: β1 < 0
H0: β1 = 0
Ha: β1 > 0

    

H0: β1 ≠ 0
Ha: β1 = 0
H0: β1 = 0
Ha: β1 ≠ 0
H0: β1 < 0
Ha: β1 = 0

Find the value of the test statistic. (Round your answer to two decimal places.)

Find the p-value. (Round your answer to three decimal places.)

p-value =

c.

Use α = 0.05 to test the significance of

β2.

State the null and alternative hypotheses.

H0: β2 = 0
Ha: β2 ≠ 0
H0: β2 = 0
Ha: β2 < 0

    

H0: β2 < 0
Ha: β2 = 0
H0: β2 = 0
Ha: β2 > 0
H0: β2 ≠ 0
Ha: β2 = 0

Find the value of the test statistic. (Round your answer to two decimal places.)

Find the p-value. (Round your answer to three decimal places.)

p-value =  

Homework Answers

Answer #1

applying regression on above:

ANOVA
df SS MS F Significance F
Regression 2 14.80 7.40 30.94 0.0015
Residual 5 1.20 0.24
Total 7 16.00
Coefficients Standard Error t Stat P-value
Intercept 85.86 1.20 71.70 0.0000
TV ads 1.82 0.23 7.84 0.0005
News ads 0.95 0.24 3.90 0.0114

a) value of the test statistic =30.94

p value =0.002

b)

H0: β1 = 0
Ha: β1 ≠ 0

value of the test statistic =7.84

p value =0.001

c)

H0: β2 = 0
Ha: β2 ≠ 0

value of the test statistic =3.90

p value =0.011

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