SOLUTION: A social researcher has constructed a measure of racial prejudice and obtained a distribution of scores on this measure from a randomly selected sample of public office holders. Th

Question 714682: A social researcher has constructed a measure of racial prejudice and obtained a distribution of scores on this measure from a randomly selected sample of public office holders. 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?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
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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