Question 21 of 21Attempt 2Suppose that a smartphone company reports that the battery life on its newest model is normally distributed with a mean of 16.2 hrs and a standard deviation of 4.2 hrs. A team of developers has created an app that is designed to increase battery life. While beta testing their app, they selected a random sample of 10 users and recorded their summary statistics in the following table.

size mean error n 3: SE 10 18.3 hrs 1.328 hrs Complete the analysis by calculating the Pvalue and making the decision. Give the Pvalue precise to at least four decimal places. The developers want their results to be statistically signicant at a level of a = 0.10. Use the data provided and the pvalue you calculated to ll in the blanks and complete the sentences that form the developers' conclusion. The decision is to evidence that phone's hypothesis. There is mean battery life with the appi hrs. I 0.10 I I 1.328 I I insufcient I I accept I I equalto I I reject I I less than I I 13.3 I I greater than I I 4.2 I 16.2 I fail to reject I I null I I alternative