The average lifetime of a light bulb is 3,000 hours with a standard deviation of 696 hours.

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The average lifetime of a light bulb is 3,000 hours with a standard deviation of 696 hours. A simple random sample of 36 bulbs is taken.
What is the probability that the average life in the sample will be less than 3,180.96 hours?

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Statistics For Business Decision Making And Analysis

ISBN: 9780321890269

2nd Edition

Authors: Robert Stine, Dean Foster

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Question Posted: Nov 03, 2017 03:39 AM

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The average lifetime of a light bulb is 3,000 hours with a standard deviation of 696 hours.

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Statistics For Business Decision Making And Analysis

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