A certain test preparation course is designed to help students improve their scores on the LSAT 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 students' scores on the exam after completing the course:
Using these data, construct a confidence interval for the average net change in a student's score after completing the course. Assume the population is approximately normal.
Step 1 of 4 :
Calculate the sample mean for the given sample data. Round your answer to one decimal place.
We need at least 10 more requests to produce the answer.
0 / 10 have requested this problem solution
The more requests, the faster the answer.
A certain test preparation course is designed to help students improve their scores on the LSAT 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 3 students' scores on the exam after completing the course: 24,18,11 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...
A certain test preparation course is designed to help students improve their scores on the LSAT 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: 6,16,19, 12, 15, 14 Using these data, construct a 90 % confidence interval for the average net change in a student's score after completing the...
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 66 students' scores on the exam after completing the course: 9,8,9,4,11,89,8,9,4,11,8 Using these data, construct a 80%80% confidence interval for the average net change in a student's score after completing the course. Assume the population...
A certain test preparation course is designed to help students improve their scores on the USMLE 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 5 students' scores on the exam after completing the course: 14,11,18,9,19 Using these data, construct a 99% confidence interval for the average net change in a student's score after completing the course. Assume the population...
A certain test preparation course is designed to help students improve their scores on the LSAT exam. A mock test 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 5 students' scores on the test after completing the course: 20,26,20,11,19 Using these data, construct a 90% confidence interval for the average net change in a student's score after completing the course. Assume the population...
A certain test preparation course is designed to help students improve their scores on the MCAT 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 7 students' scores on the exam after completing the course: 21,21,23, 20, 28, 22, 15 Using these data, construct a 90 % confidence interval for the average net change in a student's score after completing...
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 77 students' scores on the exam after completing the course: 15,12,−3,10,18,0,1315,12,−3,10,18,0,13 Using these data, construct a 80%80% confidence interval for the average net change in a student's score after completing the course. Assume the population...
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 55 students' scores on the exam after completing the course: 6,14,12,23,06,14,12,23,0 Using these data, construct a 95%95% confidence interval for the average net change in a student's score after completing the course. Assume the population...
A certain test preparation course is designed to help students improve their scores on the LSAT exam. A mock exam is given at the beginning of the semester to determine the effectiveness of the course. The following measurements are the net change in 5 students scores on the exam after completing the course: 2, 14, 1, 2, -6 Use the data to construct a 90% confidence interval for the average change in a students score after completing the course. Assume...
A certain test preparation course is designed to help students improve their scores on the MCAT 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 7 students' scores on the exam after completing the course: 21.21, 23, 20, 28, 22, 15 Using these data, construct a 90 % confidence interval for the average net change in a student's score after...