C # purdue brightspace.com/d21/ir examity Exam 1 Sanjayraj Mohanraj: Attempt 1 Time Left: 1:04:58 Time Limit: 1:25:00 Question 28 (9 points) ocuments 17 8 You want to test the hypothesis that the mean life span of transmission systems manufactured by a company is 150,000 miles, with the alternative hypothesis being that the mean life span is greater than 150,000 miles. A random sample of 100 10 11 12 transmission systems yields a sample mean of 152,000 miles and sample standard deviation of 11,262 miles. 14 15 1. What reference distribution will you use for the hypothesis test? [2 points] Documents 2. What is the value of the test-statistic that you compute from the sample for 17 18 the hypothesis test? [3 points] 3. Your hypothesis test leads you to not reject the null hypothesis at 99% 20 21 confidence level. In what interval must the test-statistic you computed lie in order for you to not reject the null hypothesis with 99% confidence? [3 points] esentations 23 24 4. What assumption does your hypothesis test require you to make about the distribution of the underlying population? [1 point] Paragraph BIUA EV EV examity BETTER TEST INTEGRITY Minimize Other 26 OCT 2 Il on.examity.com is sharing your screen. Stop sharing Hide W Q MacBook Pro Okay Thank