A psychology professor claims that the variance of IQ scores for college students is σ^2 =...
A psychology professor claims that the variance of IQ scores for college students is σ^2 = 100. Let X1, X2,…, X23 be a random sample of n = 23 IQ scores and assume these scores come from a N(µ, σ^2) distribution. Let S^2 = (1/22) ∑_(i=1 to 23) (Xi – X bar)^2 be the sample variance of these scores. The observed value of S^2 = 147.82. Show that the Var(S^2) = 10000/11. Thus, the standard deviation of S^2 is 30.15.
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properties of chi square
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A psychology professor claims that the variance of IQ scores for
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