#2 For question 2, provide:a. Null and alternate hypotheses, level of significance, and left-tail, righ:-tail or two-tailed test.b. What sampling distribution will you use? What is the critical value of zo?c. Sketch the critical region and show the critical value.d. Calculate the z value corresponding to the sample statistic and show its location on thesketch in part c.e. Based on your answers, shall we reject or fail to reject the null hypothesis at the givenlevel of significance? Explain.poineece ee e oe2) According to the Wall Street Journal, a professional employee working in a largecompany receives an average of 31.8 calls per day. Most of the calls are from otheremployees in the company. Because of the large number of calls, employees findthemselves distracted and are unable to concentrate when they return to their tasks. In aneffort to reduce distraction caused by such interruptions, one company established a"priority lit" that employees were to use before making phone calls. One month after thenew priorities were put into use, a random sample of 63 employees showed they werereceiving an average of 28.5 calls per day with a sample standard deviation of 10.7 callsper day. Use a 1% level of significance to test the claim that there has been a change(either way) in the average number of calls per day received. (Use o = 10.7)Class coda classa.b.Page 1 / 2Q +%235etg hCalt

Name: #2 For question 2, provide:a. Null and alternate hypotheses, level of
Uploaded: 2024-03-20T07:06:41.000Z
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Description: #2 For question 2, provide:a. Null and alternate hypotheses, level of significance, and left-tail, righ:-tail or two-tailed test.b. What sampling distribution will you use? What is the critical value of zo?c. Sketch the critical region and show the c