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A statistics professor at an all-womens college determined that the standard deviation of womens heights is 2.5 inches. The

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Answer #1

H0 : sigma = 2.5
Ha: sigma > 2.5

test statsitics:

n = 41, s = 2.9

chi^2 = (n-1)s^2/sigma^2

= ((41-1) *2.9^2)/2.5^2
= 53.824


p value = 1 - P(chi^2 < 53.824) with df= 40

P value = 0.0709


As p value > 0.01 Fail to reject H0 There is not suffiicient evidence to support the claim that the std. deviation is greater than 2.5 inches

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Show all work by hand. A statistics professor at an all-women's college determined that the standard deviation of women's heights is 2.5 inches. The professor claims that men's heights ar...
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