Researchers conducted a study to determine whether magnets are…

Question Answered step-by-step Researchers conducted a study to determine whether magnets are… Researchers conducted a study to determine whether magnets are effective in treating back pain. The results (higher values indicate larger reductions in pain levels) are shown in the table for the treatment​ (with magnets) group and the sham​ (or placebo) group.                    treatment  shamsample size            19       22                                                     mean                   12       10                                              standard deviation      4        3Assume that the two samples are independent simple random samples selected from normally distributed​ populations, and do not assume that the population standard deviations are equal. Use the critical value method and a 0.10 significance level to test the claim that the treatment mean measure of reduction in back pain is equal to the sham mean measure of reduction in back pain. (Hint: Consider statistictreatment-statisticsham.)Enter the smallest critical value. (Round your answer to nearest thousandth.)  Math Statistics and Probability MATH 227 Share QuestionEmailCopy link Comments (0)