What is the mean difference before and after Saturday tutoring session (d bar)?What are the null and alternative hypotheses?Critical value?Test statistic and p-value? Decision: fail to reject or reject? Is there evidence to suggest that students feel more confident after the Saturday tutoring session?

feel more confident about the course (she thinks that it will). She asks students to rate how they feel about their ability to interpret statistics output on a scale from 1 to 5, with 1 being "Not Confident At All" and 5 being "Extremely Confident". She asks students this question before and after the extra tutoring session. Does it appear that the extra tutoring session helps students feel more confident? Use a significance level of 0.05 Before 3 2 1 2 3 2 4 5 3 After 4 4 4 3 2 A 4 U 5 Question 11 (1.5 points)