Question

#3 The average daily volume of a computer stock in 2011 was muequals35.1 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 25.8 million​ shares, with a standard deviation of sequals13.8 million shares. Test the hypotheses by constructing a 95​% confidence interval. Complete parts​ (a) through​ (c) below. ​(a) State the hypotheses for the test. Upper H 0​: ▼ sigma mu p ▼ less than equals not equals greater than 35.1 million shares Upper H 1​: ▼ p sigma mu ▼ equals less than not equals greater than 35.1 million shares ​(b) Construct a 95​% confidence interval about the sample mean of stocks traded in 2014. The lower bound is nothing million shares. The upper bound is nothing million shares. ​(Round to three decimal places as​ needed.) ​(c) Will the researcher reject the null​ hypothesis? A. Do not reject the null hypothesis because muequals35.1 million shares does not fall in the confidence interval. B. Reject the null hypothesis because muequals35.1 million shares does not fall in the confidence interval. C. Do not reject the null hypothesis because muequals35.1 million shares falls in the confidence interval. D. Reject the null hypothesis because muequals35.1 million shares falls in the confidence interval. Click to select your answer(s).

Answer 1