Q8: A new type of electronic flash for cameras will last on average of p=5000 hours with a standard deviation of o=500 hours. A quality control engineer selects a random sample of 100 flashes. What is the probability that the mean lifetime of these 100 flashes will be less than 4928 hours?

Q8: A new type of electronic flash for cameras will last on average of p=5000 hours with a standard deviation of o=500 hours. A quality control engineer selects a random sample of 100 flashes. What is the probability that the mean lifetime of these 100 flashes will be less than 4928 hours?

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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Question

Q8:
A new type of electronic flash for cameras will last on average of
p=5000 hours with a standard deviation of o=500 hours. A quality control engineer
selects a random sample of 100 flashes. What is the probability that the mean lifetime of
these 100 flashes will be less than 4928 hours?

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