Short Answer
The mean lifetime of a fluorescent light bulb is 1,570 hours with a standard deviation of 200 hours. Suppose we take a sample of 100 bulbs, test them, and calculate the sample mean.
Find the mean of the sampling distribution.
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Find the standard deviation.
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What is the probability the sample mean exceeds 1,560 hours?
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Correct Answer:
Verified
Correct Answer:
Verified
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