Question: A random variable, X, is not normally distributed. it has a mean of 43 and a standard deviation of 4. A sample size of 40

A random variable, X, is not normally distributed. it has a mean of 43 and a standard deviation of 4. A sample size of 40 is taken.

find the probability that the mean of the 21 randomly selected items is less than 42. Include probability notation and the calculator input used.

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