Question 714682
The scores were normally distributed with a mean of 45 and a standard deviation of 7. What is the probability that a randomly selected case from the sample will have a score less than 38?
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z(38) = (38-45)/7] = -7/7 = -1
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P(x < 38) = P(z < -1) = normalcdf(-100,-1) = 0.1587
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Cheers,
Stan H.
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