The average daily volume of a computer stock in 2011 was  μ=35.1million​ 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 29.1 million​ shares, with a standard deviation of s=13 million shares. Test the hypotheses by constructing a 95%confidence interval. Complete parts​ (a) through​ (c) below. ( 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

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