Determine the analysis and state the null and alternate hypothesis
Find out what analysis would you do on each problem (for ex one-sample z-test, one-sample t-test, proportion test, two-sample independent t-test, or paired test)? After that state the null and alternative hypothesis for a problem.
A researcher believes the mean height of men now is more than the mean height during the 18^{th} century. He knows the mean height of men in the 18^{th} century was 5'5.5". He measures the heights of 25 men from this century and finds the mean and standard deviation for his sample.