2.Flubber Tire and Rubber Company claims that its Excelsior 3000 tires have an average life of atleast 50,000 miles. You take a random sample of 50 Excelsior 3000 tires to test Flubber's claim. Your sample average life = 49,100 miles. We are confident that the population standard deviation tire life = 4000 miles. Below you will conduct a hypothesis test using a 5% significance level. a. State the null and alternative hypothesis. b. Is the hypothesis test a one-tail or two-tail test? c. Compute the z test statistic and determine whether your null hypothesis can be rejected. 2.Flubber Tire and Rubber Company claims that its Excelsior 3000 tires have an average life of atleast 50,000 miles. You take a random sample of 50 Excelsior 3000 tires to test Flubber's claim. Your sample average life = 49,100 miles. We are confident that the population standard deviation tire life = 4000 miles. Below you will conduct a hypothesis test using a 5% significance level. a. State the null and alternative hypothesis. b. Is the hypothesis test a one-tail or two-tail test? c. Compute the z test statistic and determine whether your null hypothesis can be rejected