SOLUTION: The scores of students on a standardized test are normally distributed with a mean of 300 and a standard deviation of 40. What is the probability that a randomly chosen student sco
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Question 383487: The scores of students on a standardized test are normally distributed with a mean of 300 and a standard deviation of 40. What is the probability that a randomly chosen student scores below 273.2 on the test? Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! The scores of students on a standardized test are normally distributed with a mean of 300 and a standard deviation of 40. What is the probability that a randomly chosen student scores below 273.2 on the test?
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z(273.2) = (273.2-300)/40 = -0.6700
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P(x<273.2) = P(z< -0.6700) = normalcdf(-100,-0.67) = 0.2514
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Cheers,
Stan H.
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