rayray57951 rayray57951

20-05-2023
Mathematics

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A sample of 40 observations is selected from a normal population. The sample mean is 31, and the population standard deviation is 3. Conduct the following test of hypothesis using the 0.05 significance level. H0 : ? ? 30 H1 : ? > 30
is this a one- or two-tailed test?

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