Hypothesis Testing Assignment

Module 4

Assume you are an Intern at Consumer Reports Magazine assigned to evaluate

the claim from Apple that the average battery life leng

th for the new IPhone is at

least

8

hours on 4G with standard usage. You

find all the IPhone distribution

centers and select five IPhones from each totaling 25 IPhones for your sample.

You

test the batteries of

your total of

25 phones and get the following results for

battery length before charging was required (in hours):

4.5

6 8 5.5 7

5 7.7 6 8.5 7.5

5 9 8 6.5 5

7 8 6.5 5.5 6

6.5 8.5 5 5.5 7.5

Write a 2 paragraph report (like what you might read in a Consum

er Reports

magazine article) that summarizes your Hypothesis Testing. Include the following

information in your report: a) The type of sampling method you used b) The

mean, median and standard deviation of your sample c) a description of the

process y

ou followed when conducting your Hypothesis test (what type of test

you conducted, whether it was right, left or two tailed, and what the p

-

value was)

d) a Final decision about Apples claim based on your research.