The trade volume of a stock is the number of shares traded on a given day. The

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The trade volume of a stock is the number of shares traded on a given day. The following data,in millions (so that 2.45 represents 2,450,000 shares traded), represent the volume of Harley-Davidson stock traded for a random sample of 40 trading days in 2010.

The trade volume of a stock is the number of

(b) Construct a 90% confidence interval for the population mean number of shares traded per day in 2010.Interpret the confidence interval.
(c) A second random sample of 40 days in 2010 resulted in the data shown next.Construct another 90% confidence interval for the population mean number of shares traded per day in 2010. Interpret the confidence interval.

The trade volume of a stock is the number of

(d) Explain why the confidence intervals obtained in parts (b) and (c) are different.

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Fundamentals Of Statistics

ISBN: 9780321844606

4th Edition

Authors: Michael Sullivan III

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