Mathematics, 25.12.2021 14:00, briweaver9993

PLEASE HELP FAILING ...A random variable x has a mean of 22 and a standard deviation of 3.1. Random samples of size 40 are drawn, and the sample mean calculated each time. What is the probability that, for a given sample, is 21?

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PLEASE HELP FAILING ...A random variable x has a mean of 22 and a standard deviation of 3.1. Random...