Mathematics, 06.08.2019 21:20 kamdenburr

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 40 trading days in 2014, he finds the sample mean to be 29.9 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.

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