A psychologist has developed a set of activities which she hopes will help children develop better reading skills. In a study of the effectiveness of these activities. one class of second grade children learns with the activities. Another class of second grade children serves as the control and learned without the activities. After some period of time, the reading skills of all of these children were assessed. A summary of the reading skills data is: n X 8 Activities class: 21 51.48 11.01 No Activities 23 41.52 17.15 class: Here is some appropriate Minitab output. Here is some appropriate Minitab output. Two-Sample T-Test and CI Estimation for Difference Estimation for Difference 95% CI for 95% Upper Bound Method Difference Difference Difference for Difference Hi: population mean of Sample 1 9.96 (1.23, 18.69) 9.96 17.23 H2: population mean of Sample 2 Difference: H1 - H2 Equal variances are not assumed for this analysis. Test Test Null hypothesis Ho: H1 - H2 = 0 Null hypothesis Ho: Hi - H2 = 0 Descriptive Statistics Alternative hypothesis Hy: My - H2 = 0 Alternative hypothesis H,: 1 - H2 0 Alternative hypothesis H,: 1 - H2 # 9.96 Hi population mean of Sample T-Value DF P-Value T-Value DF P-Value -0.00 37 1.000 2.31 37 0.013Question 9 (1 point) The degrees of freedom for the t statistic in this problem are: ()31 0 between 20 and 22. ()20+22-1=41 (>50 Question 10 (1 point) The P-value for the test described above is 0 between 0.02 and 0.025. 0 between 0.025 and 0.05. 0 larger than 0.05. 0 between 0.01 and 0.02