please solve me

The following data give the times of 15 girls when they were put on ultraheavy rope-jumping program. Someone thought that such a program would increase their speed in the 40-yard dash. Let D equal the different in time run the 40-yard dash - the "before program time (x)" minus the "after-program time (y)". Assume that the distribution of D is approximately normal. N(up. 53). Test the null hypothesis Ho:up = 0 against the alternative hypothesis Hipp > 0. Use a = 0.1 y 24.97 23.98 22.93 22.83 22.38 22.39 22.76 21.66 22.98 23.17 24.76 23,63 23.41 22.75 22.91 22.34 21.82 21.68 23.80 22.53 23.80 23.61 22.10 22.74 22.08 21.95 21.80 21.58 22.84 23.58 SOLUTIONE: find the following value. Do calculations In 3 decimal places. D Sp Test statistic, to Critical value (iv) Write your answer here: Conchaion #