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Author Question: Guitars R. US has three stores located in three different areas. Random samples of the sales of the ... (Read 142 times)

Katmoss16

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on: Mar 25, 2023

Question 1

For four populations, the population variances are assumed to be equal. Random samples from each population provide the following data.

Population

Sample Size

Sample Mean

Sample Variance

1

11

40

23.4

2

11

35

21.6

3

11

39

25.2

4

11

37

24.6


Using a .05 level of significance, test to see if the means for all four populations are the same.



Question 2

Guitars R. US has three stores located in three different areas. Random samples of the sales of the three stores (in $1000) are shown below.

 

Store 1

Store 2

Store 3

80

85

79

75

86

85

76

81

88

89

80

 

80

  


 

a.Compute the overall mean.
b.State the null and alternative hypotheses to be tested.
c.Show the complete ANOVA table for this test including the test statistic.
d.The null hypothesis is to be tested at 95% confidence. Determine the critical value for this test. What do you conclude?
e.Determine the p-value and use it for the test.

Essentials of Statistics for Business and Economics ¦ Anderson, Sweeney, Williams, Camm, Cochran ¦ 7th Edition
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Marked as best answer by Katmoss16 on Mar 25, 2023

KAyteeBee1129

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Reply #1 on: Mar 25, 2023
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Katmoss16

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Reply 2 on: Mar 25, 2023
Excellent

bigcheese9

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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