QUESTION:

The average daily volume of a computer stock in 2011 was = 35.1 million shares, according to a reliable source. A stock analyst believes that the stock volume in 2018 is different from the 2011 level. Based on a random sample of 40 trading days in 2018, he finds the sample mean to be 27.3 million shares, with a standard deviation of s = 14.7 million shares. Test the hypotheses by constructing a 95% confidence interval. Complete parts (a) through (c) below.

E Test: Chapter 10 Test Question 10 of 20 This test: 20 point(s) possible This question: 1 point(s) possible Submit test The average daily volume of a computer stock in 2011 was u = 35.1 million shares, according to a reliable source. A stock analyst believes that the stock volume in 2018 is different from the 2011 level. Based on a random sample of 40 trading days in 2018, he finds the sample mean to be 27.3 million shares, with a standard deviation of s = 14.7 million shares. Test the hypotheses by constructing a 95% confidence interval. Complete parts (a) through (c) below. (a) State the hypotheses for the test. Ho: V 35.1 million shares Hy : A 35.1 million shares (b) Construct a 95% confidence interval about the sample mean of stocks traded in 2018. With 95% confidence, the mean stock volume in 2018 is between |million shares and million shares. (Round to three decimal places as needed.) (c) Will the researcher reject the null hypothesis? O A. Reject the null hypothesis because u = 35.1 million shares falls in the confidence interval. O B. Reject the null hypothesis because u = 35.1 million shares does not fall in the confidence interval. O C. Do not reject the null hypothesis because u = 35.1 million shares does not fall in the confidence interval. O D. Do not reject the null hypothesis because u = 35.1 million shares falls in the confidence interval. Next MacBook 3 5 6 O W E R T U O S D F G H J K