Mathematics, 18.12.2019 04:31 MrRandomUser
Acertain test preparation course is designed to 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 6 students' scores on the exam after completing the course: 19, 15, 9, 17, 7, 16. using these data, construct a 95% confidence interval for the average net change in a students's score after completing the course. assume the population is approx. normal. step 1. calculate the sample mean for the given sample data (round answer to 1 decimal place)step 2. calculate the sample standard deviation for the given sample data ( round answer to 1 decimal place)step 3. find the critical value that should be used in constructing the confidence interval. ( round answer to 3 decimal placed)step 4. construct the 95% confidence interval (round answer to 1 decimal place)
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