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What is the probability that the sample mean is less than 0.70 or more than 0.90 sec
The mean time to download the homepage of the University of PEI is 0.8 second.
Suppose that the download time is symmetrically distributed with a standard deviation of 0.2 second. If you select a random sample of 25 download times, a)What is the probability that the sample mean is less than 0.70 or more than 0.90 seconds |
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