You performed a study to find out if cardiac patients who exercise recover faster than the patients who do not exercise. Summary of results for randomly selected patients of your data collection are shown below. The values for patients who do not exercise are matched to the patients who exercise and the differences are calculated (with normal distribution). X = -2.95, Sa = 3. 11, n = 9 where X is sample mean of differences between two groups of patients, Sa is sample standard deviation of differences. Do you think that, on average, recovery times for patients who exercise are less than recovery times for patients who do not exercise? The t-score is 2.797 (to three decimal places). The p-value is 0.0117 A (to four decimal places). Therefore, we can reject (reject OR not reject) the null hypothesis at the 0.05 significance level that, on average, there is no difference between the recovery times for group of patients who exercise and who do not. Based on your calculations, the confidence interval falls between 1.250 A/ to 4.650 A/ (to three decimal places)