Show transcribed image text Fall 2017 Final Exaiation Question 2: (10 points) page 6 Research has claimed that the average life span of a male ito claim, the life spans of 20 male mosquitos were okeerved to bave an avgiicane standard deviation of 22 days Test whether there io enough eveure monquio i" 15 days. To test this of 16.5 days anda at the 5% significance level. a·State the appropriate null and the alternative hypotheses. b. Compute the t-test statistic. (2.5 points) c. Find the critical-value. (1.5 point) d. Decide to reject or not reject Ho. (1 point) e. Interpret your decision. (1 point) f. Construct the 95% confidence interval for the true average life spans of male m Interpret your condolence interval (3 points)
Fall 2017 Final Exaiation Question 2: (10 points) page 6 Research has claimed that the average life span of a male ito claim, the life spans of 20 male mosquitos were okeerved to bave an avgiicane standard deviation of 22 days Test whether there io enough eveure monquio i" 15 days. To test this of 16.5 days anda at the 5% significance level. a·State the appropriate null and the alternative hypotheses. b. Compute the t-test statistic. (2.5 points) c. Find the critical-value. (1.5 point) d. Decide to reject or not reject Ho. (1 point) e. Interpret your decision. (1 point) f. Construct the 95% confidence interval for the true average life spans of male m Interpret your condolence interval (3 points)





