Guitars R US Has Three Stores Located in Three Different Areas

question 134

Essay

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.
$\begin{array}{lll}\text { Store } 1&\text { Store } 2&\text { Store } 3\\80 & 85 & 79 \\75 & 86 & 85 \\76 & 81 & 88 \\89 & 80 & \\80 & &\end{array}$
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.

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