Question

It is believed that the average customer spends 6 dollars for lunch at metro fast food restaurants
A sample of the amount that fifteen customers spent at area
fast food restaurants can be found below:

9.45
6.3
6.5
8.1
7.83
6.52
6.5
8.9
10.5
8.3
10.6
11.8
9.1
8.2
6.3

Test the claim at the .05 level of significance.



a. State the null and research hypotheses



b. What is the critical value of t?




c. Calculate the test statistic.



d. Perform a hypothesis test; state your result





e. State your conclusion (in plain English)

Answer 1

Solution-

Ho: mean = 6

Ha: mean ≠ 6

Result - Null hypothesis rejected.