In 2007, Apple stock had a mean daily volume of 35.1 million shares, according to Yahoo!Finance. A

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In 2007, Apple stock had a mean daily volume of 35.1 million shares, according to Yahoo!Finance. A random sample of 40 trading days in 2010 resulted in a sample mean of 23.6 million shares with a standard deviation of 11.7 million shares.

(a) Based on the histogram and boxplot shown (from StatCrunch), why is a large sample necessary to conduct a hypothesis test about the mean?

(b) Does the evidence suggest that the volume of Apple stock has changed since 2007? Use the Î± = 0.05 level of signiï¬cance.

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Fundamentals Of Statistics

ISBN: 9780321844606

4th Edition

Authors: Michael Sullivan III

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Question Posted: Apr 28, 2015 12:28 AM

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In 2007, Apple stock had a mean daily volume of 35.1 million shares, according to Yahoo!Finance. A

Question:

029 02 615 0 05 10 20 20 40 83 10 20 20

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a The data are skewed to the right and there are outliers b Hypotheses H 0 351 versus H 1 ...View the full answer

Fundamentals Of Statistics

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