- Find the p-value. O 0.01 s p-value < 0.025 O p-value < 0.01 O p-value 2 010 O 0.05 s p-value < 0.10 O 0.025 s p-value < 0.05 -3. At the 1% significance level, what is the conclu

MATLAB: An Introduction with Applications
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Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Question
I would like for you to answer b-2, b-3, and c-1
b-2. Find the p-value.
O 0.01 s p-value < 0.025
O p-value < 0.01
O p-value 2 0.10
O 0.05 s p-value < 0.10
O 0.025 s p-value < 0.05
b-3. At the 1% significance level, what is the conclusion to the test?
O Do not reject Hg, we can conclude that Unemployment is negatively related to Sales.
O Do not reject Hg; we cannot conclude that Unemployment is negatively related to Sales.
O Do not reject Hg: we can conclude that Unemployment is positively related to Sales.
O Do not reject Hg, we cannot conclude that Unemployment is positively related to Sales.
c-1. Choose the appropriate hypotheses to test whether advertising expenditures are positively related with sales.
O Họ: 62 s 0; HA: 62 > 0
O Họ: 62 2 0; HA: 62 < 0
O Ha: 8, = 0; Ha: 6, + 0
Transcribed Image Text:b-2. Find the p-value. O 0.01 s p-value < 0.025 O p-value < 0.01 O p-value 2 0.10 O 0.05 s p-value < 0.10 O 0.025 s p-value < 0.05 b-3. At the 1% significance level, what is the conclusion to the test? O Do not reject Hg, we can conclude that Unemployment is negatively related to Sales. O Do not reject Hg; we cannot conclude that Unemployment is negatively related to Sales. O Do not reject Hg: we can conclude that Unemployment is positively related to Sales. O Do not reject Hg, we cannot conclude that Unemployment is positively related to Sales. c-1. Choose the appropriate hypotheses to test whether advertising expenditures are positively related with sales. O Họ: 62 s 0; HA: 62 > 0 O Họ: 62 2 0; HA: 62 < 0 O Ha: 8, = 0; Ha: 6, + 0
Akiko Hamaguchi is a manager at a small sushi restaurant in Phoenix, Arizona. Akiko is concerned that the weak economic
environment has hampered foot traffic in her area, thus causing a dramatic decline in sales. In order to offset the decline in sales, she
has pursued a strong advertising campaign. She believes advertising expenditures have a positive influence on sales. To support her
claim, Akiko estimates the following linear regression model: Sales = 69 + 6,Unemployment + 6,Advertising + E. A portion of the
regression results is shown in the accompanying table.
ANOVA
df
SS
MS
Significance F
Regression
Residual
55.5974
27.7987
9.491
0.002
14
41.0038
2.9288
Total
16
96.6010
Standard
Coefficients
Error
t Stat
p-value
0.005
Intercept
Unemployment
Advertising
12.1640
3.6640
3.3200
-0.6615
0.3005
-2.2010
0.045
0.0258
0.0087
2.9660
0.010
a-1. Choose the appropriate hypotheses to test whether the explanatory variables jointly influence sales.
O Ho: 8, = 6, = 0; HA: At least one 6; # 0
O Ho: 61 = 62 = 0; HA: At least one 6, > 0
O Ho: 61 = 62 = 0; HA: At least one 6, < 0
Transcribed Image Text:Akiko Hamaguchi is a manager at a small sushi restaurant in Phoenix, Arizona. Akiko is concerned that the weak economic environment has hampered foot traffic in her area, thus causing a dramatic decline in sales. In order to offset the decline in sales, she has pursued a strong advertising campaign. She believes advertising expenditures have a positive influence on sales. To support her claim, Akiko estimates the following linear regression model: Sales = 69 + 6,Unemployment + 6,Advertising + E. A portion of the regression results is shown in the accompanying table. ANOVA df SS MS Significance F Regression Residual 55.5974 27.7987 9.491 0.002 14 41.0038 2.9288 Total 16 96.6010 Standard Coefficients Error t Stat p-value 0.005 Intercept Unemployment Advertising 12.1640 3.6640 3.3200 -0.6615 0.3005 -2.2010 0.045 0.0258 0.0087 2.9660 0.010 a-1. Choose the appropriate hypotheses to test whether the explanatory variables jointly influence sales. O Ho: 8, = 6, = 0; HA: At least one 6; # 0 O Ho: 61 = 62 = 0; HA: At least one 6, > 0 O Ho: 61 = 62 = 0; HA: At least one 6, < 0
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