x | Assignments X Homework X G A simple random sample ( x |+ X tedAssignmentOverview.aspx?homeworkld=699155195&back=DoAssignments.aspx h : Hannah Yeakle 07/22/25 5:11 PM Question Completed: 6 of 11 Part 2 of 7 My score: 5.8/11 pts (52.73%) Save Researchers conducted a study to determine whether magnets are effective in treating back pain. Pain was measured using the visual analog scale, and the results shown below are among the results obtained in the study. Higher scores correspond to greater pain levels. Assume 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. Complete parts (a) to (c) below. Reduction in Pain Level After Magnet Treatment (H, ): n = 23, x = 0.58, s = 0.91 Reduction in Pain Level After Sham Treatment (H2): n = 23, x = 0.52, s = 1.33 treatment (similar to a placebo). What are the null and alternative hypotheses? OB. Ho: H1 = H2 O A. HO: Hy

H 2 Hy : Hy