A new Fluorescent light to replace incandescent bulbs has come on the market. The box says it

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A new Fluorescent light to replace incandescent bulbs has come on the market. The box says it has an average life of 8,000 hours with a standard deviation of 900 hours.

a) What is the probability that a single light will last between 7950 and 8100 hours?

b) What is the probability that the mean of a sample of 75 bulbs picked at random will be between 7950 and 8100 hours?

Related Book For answer-question

Introductory Statistics

ISBN: 9780470904107

8th Edition

Authors: Prem S. Mann

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Posted Date: Apr 22, 2024 02:02 PM

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A new Fluorescent light to replace incandescent bulbs has come on the market. The box says it

Question:

Expert Answer:

To solve this problem we will use the normal distribution since the average life of the light bulbs ... View the full answer

Introductory Statistics

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