The average selling price of BlackBerry smartphones purchased by a random sample of 35 customers was $311.

Question:

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: 9780133852288

2nd Edition

Authors: Robert A Donnelly, Robert Donnelly Jr

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Question Posted: Jul 09, 2024 10:09 AM

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The average selling price of BlackBerry smartphones purchased by a random sample of 35 customers was $311.

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Business Statistics

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