Question #9 (9 points) A professional employee in a large corporation receives an average of u = 41.7 e-mails per day. An anti-spam protection program was installed in the company's server and one month later a random sample of 45 employees showed that they were receiving an average of x= 36.2 e-mails per day. Assume that o = 18.45. Use a 5% level of significance to test whether there has been a change (either way) in the average number of emails received per day per employee. a.) What is a? State the null and alternate hypotheses. Will you use a left-tailed, right-tailed, or two- tailed test? a : Ho: M = H1: / Select an answer v The test is a Select an answer v| test b.) Identify the Sampling Distribution you will use. What is the value of the test statistic? The best sampling distribution to use is the |Select an answer v| distribution. The test statistic (z or t value) is = c.) Find or estimate the P-value for the test. The p-value is = d.) Conclude the test. Based on this we will Select an answer v] the null hypothesis