The average daily volume of a computer stock in 2011 was muμequals=35.135.1
millionâ shares, according to a reliable source. A stock analyst believes that the stock volume in 2014 is different from the 2011 level. Based on a random sample of 3030
trading days inâ 2014, he finds the sample mean to be 31.431.4
millionâ shares, with a standard deviation of sequals=14.214.2
million shares. Test the hypotheses by constructing a 9595â%
confidence interval. Complete partsâ (a) throughâ (c) below.
The average daily volume of a computer stock in 2011 was μ = 35.1 million shares, according to a reliable source. A stock analyst believes that the stock volume in 2014 is different from the 2011 level. Based on a random sample of 30 trading days in 2014, he finds the sample mean to be 31.4 million shares, with a standard deviation of s-14.2 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: | â¼I â¼35.1 million shares H1 : | â¼ â¼35.1 million shares (b) Construct a 95% confidence interval about the sample mean of stocks traded in 2014 Lower Boundãmillion shares; Upper Boundãmillion shares (Round to three decimal places as needed.) (c) Will the researcher reject the null hypothesis? â A. Do not reject the null hypothesis because μ-35.1 million shares falls in the confidence interval. O B. Reject the null hypothesis because μ-35.1 million shares falls in the confidence interval ° C. Reject the null hypothesis because μ-35.1 million shares does not fall in the confidence interval. D. Do not reject the null hypothesis because μ = 35.1 million shares does not fall in the confidence interval. Click to select your answer(s).