Question

In: Statistics and Probability

Given that x is a normal variable with mean 42 and standard deviation 6.2, find the...

Given that x is a normal variable with mean 42 and standard deviation 6.2, find the following probabilities. (Round your answer to four decimal places.)

(a) P(x<= 60)

(b) P(x>= 50)

(c) P(50 <=x<= 60)

Solutions

Expert Solution

Refer Standard normal table/Z-table to find the probability or use excel formula "=NORM.S.DIST(2.90, TRUE)" to find the probability.

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Refer Standard normal table/Z-table to find the probability or use excel formula "=NORM.S.DIST(1.29, TRUE)" to find the probability.

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Refer Standard normal table/Z-table to find the probability or use excel formula "=NORM.S.DIST(2.90, TRUE)" & "=NORM.S.DIST(1.29, TRUE)" to find the probability.

orchestra answered 1 year ago
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