A population of values has a normal distribution with μ 83.7 and σ = = n = 18 is selected, 31.7. If a random sample of size a. Find the probability that a single randomly selected value is greater than 95.7. Round your answer to four decimals. P(X > 95.7) = b. Find the probability that a sample of size n = 18 is randomly selected with a mean greater than 95.7. Round your answer to four decimals. P(M > 95.7) =

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