2. A P-value of 15% is calculated on a hypothesis test with a signicance level set at 5%. Which of the following is the correct conclusion for the test? a. Claim the null hypothesis is true b. Fail to reject the null hypothesis c. Reject the null hypothesis d. Claim the alternative hypothesis is true e. Is there sufficient evidence at the 5% signicance level to believe the mean battery life on refurbished versions of the Model X is different from that on new Model X phones? Explain your reasoning. 6. According to Phones-R-Us, the average battery life on a new Model X phone is 28 hours with a standard deviation of4.3 hours. Using a recent test of refurbished Model X phones, the company wishes to determine if the average battery life of refurbished phones of this model is signicantly different at the 5% signicance level. In using a collection of forty-ve randomly selected refurbished Model X phones, they found an average battery life of 26.8 hours. a. Give the null and alternative hypotheses for this test. H0: H1: b. Determine the value of the test statistic. c. Determine the appropriate critical value{s). d Determine the P-value