The file fast food contains the amount if that a sample

| August 31, 2017

Question
The file fast food contains the amount if that a sample of fifteen customers spent for lunch at a fast-food restaurant:

7.42, 6.29, 5.83,. 6.50, 8.34, 9.51, 7.10, 6.80, 5.90, 4.89, 6.50, 5.52, 7.90, 8.30, 9.60

A) At the 0.05 level of significance, is there evidence that therein amount spent for lunch is different from $6.60?

B) Determine the p-value in (A) and interpret its meaning.

C) What assumption must you make about the population distribution in order to conduct the t-test in (A) and (B)?

D) Because the sample size is 15, do you need to be concerned about the shape of the population distribution when conducting the t-test in (A)? Explain.

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