(A)Are All Three Sandwich Shops Serving the Same Number of Customers,on

question 5

Essay

(A)Are all three sandwich shops serving the same number of customers,on average,for lunch each weekday? Test the appropriate hypotheses at the 5% level of significance.
(B)Explain why the weights for the pooled variance are the same for each of the samples.
(C)Use the information related to the 95% confidence interval to explain how the number of customers Joe has each weekday compares to his competition.