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IQ scores from the general population form a normal distribution with a m = 100

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IQ scores from the general population form a normal distribution with a m = 100 and s = 15.  However, data indicate that children’s intelligence may be affected if their mothers have German measles during pregnancy.  Using hospital records, a researcher obtained a sample of n = 25 school children whose mothers all had German measles during their pregnancies.  The average IQ for this sample was = 94.  Do these data indicate that German measles have a significant effect on IQ?  Test with p=.05.

Apr 6th, 2015
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Apr 6th, 2015
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Apr 6th, 2015
Feb 23rd, 2017
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