A doctor wants to know if workers' health would change if a company gave workers extra days off. All workers take a standard physical exam twice a year and are given an overall health rating with higher scores indicating better health. The doctor selected five workers at random, arranged to have them receive an additional 2 days off every month over the period between health exams, and then compared the health scores on the two exams. Using the .01 significance level (two tailed test), do the scores in the table below support the notion that having extra days off changes health? Health Rating Before and After Period of Extra Days Off Before After 75 81 66 67 44 46 86 88 89 89 a. What is the null hypothesis (write out) b. What is the research hypothesis (write out) c. What is MD? d. What is SD ? e. What is SMD? f. What is the cutoff t-value (p <.01 two tailed g. what is the obtained t-value h. accept or reject null i. are lower and upper ci limits j. cohen d k. small medium large effect>