OO Homework ch8 E Question 12 of 36 (1 point) | Question Attempt: 1 of Unlimited Ivan V Espanol A very large company is interested in its employees' productivity. The company reports from its historical data that its employees spend almean of 151 minutes per employee (on a typical day) dealing with email. To test this claim, an independent consultant chooses 21 employees at random and finds that those employees spend a sample mean of 142 minutes dealing with email, with a sample standard deviation of 21 minutes. Assume that the population of amounts of time employees spend dealing with email is approximately normally distributed. Complete the parts below to perform a hypothesis test to see if there is enough evidence, at the 0.10 level of significance, to reject the claim that , the mean number of minutes employees spend dealing with email, is equal to 151. (a) State the null hypothesis Ho and the alternative hypothesis H, that you would use for the test. Ho: H X M H: 0 020 0-0 0+0 X 5 ? (b) Perform a t test and find the p-value. Here is some information to help you with your : test. . The value of the test statistic is given by = x - H S n . The p-value is two times the area under the curve to the left of the value of the test statistic. Student's t Distribution