The average selling price of BlackBerry smartphones purchased by a random sample of 35 customers was $

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The average selling price of BlackBerry smartphones purchased by a random sample of 35 customers was $ 311. Assume the population standard deviation was $ 35.

a. Construct a 90% confidence interval to estimate the average selling price in the population with this sample.

b. What is the margin of error for this interval?

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Business Statistics

ISBN: 9780321925121

2nd Edition

Authors: Robert A. Donnelly

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Question Posted: Jul 17, 2015 07:10 AM

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The average selling price of BlackBerry smartphones purchased by a random sample of 35 customers was $

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a x 35 35 592 UCL x ...View the full answer

Business Statistics

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