A random sample of the closing stock prices for a company in a recent year is listed.

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A random sample of the closing stock prices for a company in a recent year is listed. Assume that σ is $2.62.

Use the information to construct the 90% and 99% confidence intervals for the population mean. Interpret the results and compare the widths of the confidence intervals. If convenient, use technology to construct the confidence intervals.

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Elementary Statistics Picturing The World

ISBN: 9780321911216

6th Edition

Authors: Ron Larson, Betsy Farber

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Question Posted: Nov 24, 2015 07:48 AM

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A random sample of the closing stock prices for a company in a recent year is listed.

Question:

18.41 16.91 16.83 17.72 15.54 15.56 18.01 19.11 19.79 18.32 18.65 20.71 20.66 21.04 21.74 22.13 21.96 22.16 22.86 20.86 20.74 22.05 21.42 22.34 22.83 24.34 17.97 14.47 19.06 18.42 20.85 21.43 21.97 21.81

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x x n 67867 34 1996 90 CI x z c n 1996 1645 262 34 1996 0739 1922 2070 99 ...View the full answer

Elementary Statistics Picturing The World

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