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 2018 is different from the 2011 level. Based on a random sample of 30 trading days in 2018, he finds the sample mean to be 27.6 million shares, with a standard deviation of s = 11.4 million shares. Test the hypotheses by constructing a 95% confidence interval. Complete parts (a) through (c) below. (a) State the hypotheses for the test. Hoi H = 35.1 million shares H₁: H # 35.1 million shares (b) Construct a 95% confidence interval about the sample mean of stocks traded in 2018. million shares. With 95% confidence, the mean stock volume in 2018 is between million shares and (Round to three decimal places as needed.)

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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 2018 is different from the 2011 level. Based on a random sample of 30 trading days in 2018, he finds the sample mean to be 27.6
million shares, with a standard deviation of s = 11.4 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: 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 2018.
million shares.
With 95% confidence, the mean stock volume in 2018 is between million shares and
(Round to three decimal places as needed.)
Transcribed Image Text: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 2018 is different from the 2011 level. Based on a random sample of 30 trading days in 2018, he finds the sample mean to be 27.6 million shares, with a standard deviation of s = 11.4 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: 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 2018. million shares. With 95% confidence, the mean stock volume in 2018 is between million shares and (Round to three decimal places as needed.)
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