137 A random sample of 41 observations from a normal population possessed a mean of x =...
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137 A random sample of 41 observations from a normal population possessed a mean of x = 88 and a standard deviation of s = 6.9.
a. Test H0: s2 = 30 against Ha: s2 7 30. Use a = .05.
b. Test H0: s2 = 30 against Ha: s2 30. Use a = .05.
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