Assuming the life times of different bulbs are independent, approximate the probability that the stock of lightbulbs will last the next 350weeks.
Assuming the life times of different bulbs are independent, approximate the probability that the stock of lightbulbs will last the next 350weeks.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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Question
A coastguard station has a stock of 40 extra luminescent bulbs to maintain the light in a lighthouse. The lifetime of such a bulb is a random variable with a mean of 8 weeks and a standard deviation of 5 weeks. Assuming the life times of different bulbs are independent, approximate the probability that the stock of lightbulbs will last the next 350weeks.
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