The table below contains the amount that a sample of nine customers spent for lunch ($)...

The table below contains the amount that a sample of nine customers spent for lunch ($) at a fast-food restaurant:

4.88 5.01 5.79 6.35 7.39 7.68 8.23 8.71 9.88

a. Compute the sample mean and sample standard deviation of the amount spent for lunch.

b. Construct a 99% confidence interval estimate for the population mean amount spent for lunch ($) at the fast-food restaurant, assuming the population is normally distributed.

c. Interpret the interval constructed in (b).

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Expert Solution

orchestra answered 11 months ago

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