Question

Please show all work for part b:

The average daily volume of a computer stock in 2011 was

muμequals=35.135.1 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 26.8 million​ shares, with a standard deviation of s=14.8 million shares. Test the hypotheses by constructing a 95​% confidence interval. Complete parts​ (a) through​ (c) below.

​(a) State the hypotheses for the test.

H₀: μ=35.1 million shares

H₁​: μ≠35.1 million shares

​(b) Construct a 95​% confidence interval about the sample mean of stocks traded in 2014.

The lower bound is ______ million shares

The upper bound is ______ million shares

(round to three decimal places as needed.)

Answer 1