Consider the processed data below. Paired Samples Statistics Mean N Sid. Deviation Sid. Error Mean pretest scores 19.95 98 3.329 330 Pair 1 posttest scores 28.68 98 1.577 -159 Paired Samples Test Paired Differences di Sig. (2- Mean Std. Std. Error 95% Confidence Interval of the tailed Deviation Mean Difference Lower Upper pretest scores . Pair 1 -8.735 3.241 .327 -9.385 -8.085 -26.677 97 000 posttest scores a. State the null hypothesis b. What is the difference between the pretest and posttest score? c. At 5% level of significance, is the difference between the means significant or not significant based on the processed data below? d. What is the decision? (Reject Ho or Do not reject Ho) e. State your conclusion