1.A company that produces cell phones claims its standard phone battery lsts longer on average than other batteries in the market. To support claim, the company publishes an ad reporting the results of a recent experiment showing that under normal usage, its batteries last at least 35 hours. To investigate this claim, a consumer advocacy group asked the company for the raw data. The company sends the group the following results:

35, 34, 32, 31, 34, 34, 32, 33, 35, 55, 32, 31

Test an appropriate hypothesis and state your conclusion:

a)Including the outlier,

b)Excluding the outlier. What should be done about the outlier?