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General population form a normal distribution with a µ

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Reference no: EM13700411

IQ scores from the general population form a normal distribution with a μ = 100 and σ = 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 x¯ = 94. Do these data indicate that German measles have a significant effect on IQ? Test with p=.05.

Reference no: EM13700411

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