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Home Q & A Board Science-Related Homework Help Mathematics Statistics and Probability
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doggerfresh doggerfresh
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A year ago

In order to compare the life expectancies of three different brands of printers, eight printers of each brand were randomly selected. Information regarding the three brands is shown below.
 


 

 

Brand A

Brand B

Brand C

Average life (in months)

62

52

60

Sample variance

36

25

49


 

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.

Textbook 
Essentials of Statistics for Business and Economics

Essentials of Statistics for Business and Economics


Edition: 7th
Authors:
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shanej399shanej399
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A year ago
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