SOLUTION: Is 120.5 correct? A standardized test has a mean of 600 and a standard deviation of 75. If 1000 students took the test and their scores approximated a normal curve, how many scored
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Question 366857: Is 120.5 correct? A standardized test has a mean of 600 and a standard deviation of 75. If 1000 students took the test and their scores approximated a normal curve, how many scored between 600 and 750? Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! Is 120.5 correct? A standardized test has a mean of 600 and a standard deviation of 75. If 1000 students took the test and their scores approximated a normal curve, how many scored between 600 and 750?
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P(600< x < 750) = 0.477250
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# that scored between 600 and 750 = 0.477250*1000 = 477.25
= 478 when rounded up
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Cheers,
Stan H.
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