Part A is difficult for me

Homework: Ch7 Assignment7 (54quez, 108pts) {Su14} Save Score: 0 of 8 pts 40 of 54 (53 complete) HW Score: 78.5%, 84.78 of 108 pts 7.3.23 Question Help In a study designed to test the effectiveness of magnets for treating back pain, 35 patients were given a treatment with magnets and also a sham treatment without magnets. Pain was measured using a scale from 0 (no pain) to 100 (extreme pain). After given the magnet treatments, the 35 patients had pain scores with a mean of 4.0 and a standard deviation of 2.6. After being given the sham treatments, the 35 patients had pain scores with a mean of 5.7 and a standard deviation of 2.9. Complete parts (a) through (c) below. Click here to view a t distribution table. Click here to view page 1 of the standard normal distribution table. Click here to view page 2 of the standard normal distribution table. a. Construct the 90% confidence interval estimate of the mean pain score for patients given the magnet treatment. What is the confidence interval estimate of the population mean ? (Round to one decimal place as needed.) X S More Enter your answer in the edit fields and then click Check Answer. parts Clear All Check Answer remaining