Course Ass X * [Solved y! A certa C | Chegg C The foll C Determ C Home C For the C | Chegg C Considc | Chegg C | Cheg + X C learn.hawkeslearning.com/Portal/Test/TestTakeTest#! 0 I Update : Submit Assignment FINAL EXAM Fall 2022 INESA SVALAITYTE Question 30 of 30 Step 1 of 4 01:12:28 A certain test preparation course is designed to help students improve their scores on the GRE exam. A mock exam is given at the beginning and end of the course to determine the effectiveness of the course. The following measurements are the net change in 6 students' scores on the exam after completing the course: 23, 19, 1, 12, 8, 32 Using these data, construct a 95 % confidence interval for the average net change in a student's score after completing the course. Assume the population is approximately normal. Copy Data Step 1 of 4: Calculate the sample mean for the given sample data. Round your answer to one decimal place.