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zns889 zns889
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7 years ago
A sample of 30 items provided a sample mean of 28 and a sample standard deviation of 6 . Test the following hypotheses using  = .05 . What is your conclusion? H0: 2  25 Ha: 2 > 25
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7 years ago
2 = 41.76 < 45.7222; do not reject H0, there is not sufficient evidence to conclude that the population variance exceeds 25
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