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A company's construction time follows a normal distribution. The mean time to construct a building is 100 days and the standard deviation is 20 days.
What is the probability that the company will finish the job in less than 125 days?
0.2029
0.5000
0.8944
0.1056
0.3944
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what is the probability that the mean of a random sample will be equal to or greater than the 97.5 percentile of its
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