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According to the National Health Statistics Reports, the mean height of U.S. men is 69.5 inches. In a sample of $n=300$ men (between the ages 60-69), the mean height was $xˉ=69$ with $σ=2.84$. Public health officials want to determine whether the mean height $μ$ for older men is less than usual height. Test at $5%$ significance level. Some parts need Rguroo. Refer to the activity instructions for guidance. a) The parameter of interest is b) $α=$ c) The null hypothesis is $H_{0}:μ$ vs. $H_{a}:μ$ d) Conclusion:
Since the $P$-value $=P(xˉ<69)=$ conclude that e) We can reject the null for $xˉ$ height values inches.
c) The null hypothesis is $H_{0}:μ$ $H_{a}:μ$ VS. d) Conclusion: Since the $P$-value $=P(xˉ<69)=$ conclude that , we can $✓$ [Select] and state that the mean height of men significantly changes the mean height for older men is less than usual height the mean height for older men is a normal height values inches.
c) The null hypothesis is $H_{0}:μ$ vs. $H_{a}:μ$ d) Conclusion: Since the $P$-value $=P(xˉ<69)=$ , we can conclude that and state that e) We can reject the null for $xˉ$ height values inches.

The concept of hypothesis testing of one-sample is to be followed because of the pop. stand. the ...

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