Field tests of a low-calorie sport drink found that 80 of the 100 who

Using the below exhibit formulate a statistical hypothesis appropriate for the consumer group's purpose, then calculate the mean average miles per gallon. compute the sample variance and sample standard deviation. determine the most appropriate statistical test using 0.05 significance level.  

purchaser	miles per gallon	Purchaser	miles per gallon
1	30.9	13	27
2	24.5	14	26.7
3	31.2	15	31
4	28.7	16	23.5
5	35.1	17	29.4
6	29	18	26.3
7	28.8	19	27.5
8	23.1	20	28.2
9	31	21	28.4
10	30.2	22	29.1
11	28.4	23	21.9
12	29.3	24	30.9