SOLUTION: Assume the random variable X is normally distributed with a mean = 50 and standard deviation = 7. Compute the probability. P(x>39).
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Question 898192: Assume the random variable X is normally distributed with a mean = 50 and standard deviation = 7. Compute the probability. P(x>39). Answer by ewatrrr(24785) (Show Source):
You can put this solution on YOUR website! P(x>39) = 1 - P(x ≤ 39)
P(x ≤ 39) = P(z = (39-50)/7 = -11/7) = -1.5714) = .058
P(x>39) = 1 - P(x ≤ 39) = 1-.058 = .942 = 94.2%
