Help with the questions on my paper and number 4 goes with the textbook questions 12. Callahan (2009) demonstrated that tai chi can signifi-cantly reduce symptoms for individuals with arthritis.Participants were 18 years old or older with doctor-diagnosed arthritis. Self-reports of pain and stiffnesswere measured at the beginning of an eight-week taichi course and again at the end. Suppose that the dataproduced an average decrease in pain and stiffness ofMp = 8.5 points with a standard deviation of 21.5 fora sample of n = 40 participants.a. Use a two-tailed test with a = .05 to determinewhether the tai chi had a significant effect on painand stiffness.b. Compute Cohen's d to measure the size of thetreatment effect. ul CC8:05 PM9 @ 98% 4Chapter 11 Homework...Chapter 11 Homework Assignment*1. A repeated-measures, a matched-subjects, and an independent-measures study all produceat statistic with df = 24. How many subjects participated in each experiment?2. A sample of n = 25 individuals participates in a repeated-measures study that produces asample mean difference of Mp= 7.86 with SS = 550 for the difference scores.a. Calculate the standard deviation for the sample of difference scores. What does thisnumber mean?b. Calculate the estimated standard error for the sample mean difference. What doesthis number mean?3. The following data are from a repeated-measures study examining the effect of twodifferent types of treatment by measuring a group of n = 9 participants receiving treatmentone and then receiving treatment two.a. Calculate the difference scores and Mp.b. Compute Ss, sample variance, and estimated standard error.Is there a significant difference between the treatments? Use a = .01, two tails.C.ParticipantTreatment ITreatment IIA1210B11795D84F3G77H971224. Complete #12 in the textbook. However, change the mean difference to be 12 points with astandard deviation of 26.25 for a sample of n = 25 participants. Make sure to answer a-b.5. Complete #14 in the textbook. However, change the mean difference to be 9.25 points withSS = 290. Make sure to answer a-c.*Adapted from Chapter 11 Problems from Essentials of Statistics for the Behavioral Sciences (9h ed.) byGravetter, Wallnau, and Forzano.12888000DashboardCalendarTo DoNotificationsInbox

Answered: Image /qna-images/answer/9fe81877-6307-4290-9d91-aa9b3451d7b5.jpg

12. Callahan (2009) demonstrated that tai chi can signifi- cantly reduce symptoms for individuals with arthritis. Participants were 18 years old or older with doctor- diagnosed arthritis. Self-reports of pain and stiffness were measured at the beginning of an eight-week tai chi course and again at the end. Suppose that the data produced an average decrease in pain and stiffness of Mp = 8.5 points with a standard deviation of 21.5 for a sample of n = 40 participants. a. Use a two-tailed test with a = .05 to determine whether the tai chi had a significant effect on pain and stiffness. b. Compute Cohen's d to measure the size of the treatment effect.

12. Callahan (2009) demonstrated that tai chi can signifi- cantly reduce symptoms for individuals with arthritis. Participants were 18 years old or older with doctor- diagnosed arthritis. Self-reports of pain and stiffness were measured at the beginning of an eight-week tai chi course and again at the end. Suppose that the data produced an average decrease in pain and stiffness of Mp = 8.5 points with a standard deviation of 21.5 for a sample of n = 40 participants. a. Use a two-tailed test with a = .05 to determine whether the tai chi had a significant effect on pain and stiffness. b. Compute Cohen's d to measure the size of the treatment effect.

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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