Suppose x has a distribution with a mean of 90 and a standard deviation of 36. Random samples of size n = 64 are drawn.

Question

Find P(x < 94.5).

(Round your answer to four decimal places.)

P(x < 94.5) =

Answer 1

z-computed = (x - mean)/SD for x = 94.5, mean = 90 and SD = 36

P(x < 94.5) = P(z < z-computed).

Look up above probability from standard normal probability table