Assume That a Simple Random Sample Has Been Selected from a Normally

Essay

Assume that a simple random sample has been selected from a normally distributed population. Find the test statistic, P-value, critical value(s), and state the final conclusion.
-Test the claim that the mean age of the prison population in one city is less than 26 years. Sample data are summarized as $\mathrm { n } = 25 , \overline { \mathrm { x } } = 24.4$ years, and $\mathrm { s } = 9.2$ years. Use a significance level of $\alpha = 0.05$ .