A teacher gives a test to her classes before and after showing them a particular educational video. A random sample of 24 of these students is selected. It was found that B of these students had a higher post video test score, 14 of them had a lower post-video test score, and 2 students had equal pre- and post- video test scores. The sign test at the 0.2 significance Level will be used to test the claim that the video does not affect students' test scores. [a} What is the value of the test statistic used in this sign test?| I [b] What is the critical value in this sign test? | | [c} What is the correct conclusion of this sign test? '33:? There is not sufficient evidence to support the claim that the video does not affect students' test scores. '33:? There is sufficient evidence to warrant rejection of the claim that the video does not affect students' test scores. '33:? There is sufficient evidence to support the claim that the video does not affect students' test scores. '33:? There is not sufficient evidence to warrant rejection of the claim that the video does not affect students' test scores