Math Solutions

(Step-by-Step) The sample of 36 observations is selected from a normal population. The sample mean is 21 and the population standard deviation is 5. Conduct

Question: The sample of 36 observations is selected from a normal population. The sample

mean is 21 and the population standard deviation is 5. Conduct the following test of

hypothesis using the .05 significance level.

\[\begin{aligned}{{H}_{0}}:\mu {\le} {20}\, \\ {{H}_{A}}:\mu {>} {20} \\ \end{aligned}\]

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