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sample mean = 213.4552 sample Standard deviation = 44.81542 N=50 alpha = .05 SEM = 6.337857477...

sample mean = 213.4552

sample Standard deviation = 44.81542

N=50

alpha = .05

SEM = 6.337857477

For each of the following hypothesis testing problems, manually calculate the t-statistic, use the 5% level of significance (alpha = 0.05), determine the rejection region, determine the p-value of the t-test, use the 95% confidence interval in part (c) to make a decision about whether or not to reject the null hypothesis.

Test the null hypothesis that the true mean is 225 versus the alternative hypothesis that the true mean is different from 225. Symbolically,

H0:μ=225 against H1:μ≠225

Test the null hypothesis that the true mean is 220 versus the alternative hypothesis that the true mean is different from 220. Symbolically,

H0:μ=220 against H1:μ≠220

math   Statistics-And-Probability   
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Answer #1

凸pothesis 22s # 225 213. 4552-225 912 as.gi5시요1fT 5/ .22 Ay using table et Hicc 5 nicW

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