Question are on images. Question 1A researcher conducts and independent-measures studyexamining the effectiveness of a group exercise program at anassisted living facility for elderly adults. One group of residentsis selected to participate in the program, and a second groupserves as a control. After 6 weeks, the research records acombined score measuring balance and strength for eachindividual. The data are as follows:ControlExercisen = 10n = 15М 3 12М%3D 15.5SS = 120.5 SS = 190.01. Does the exercise program have a significant effect? Use analpha level of .05, two tails. Show all calculations.a. State the research hypotheses (4 points)b. Identify the critical value (3 points)c. Calculate the test statistic (5 points)d. Evaluate the null hypothesis (4 points)2. Compute Cohens d to measure the effect size of thetreatment. (4 points)Question 2A researcher would like to examine how the chemicaltryptophan, contained in foods such as turkey, can affect mentalalert ness. A sample of n- 9 college students is obtained, andeach student's performance on a familiar video game ismeasured before and after eating a traditional Thanksgivingdinner including roast turkey. The average score dropped by M,= 14 points after the meal with SS = 1152 for the differencescores.1. Is there a significant difference in performance beforeeating versus after eating? Use a two-tailed test with a =.05. Show all calculations.a. State the research hypotheses (4 points)b. Identify the critical value (3 points)c. Calculate the test statistic (4 points)d. Evaluate the null hypothesis (4 points) Question 3A psychologist would like to examine the effects of differenttesting methods on the final performance of college students.One group has regular quizzes, one group has three large exams,and the third group only has a final exam. At the end of thecourse, the psychologist interviews each student to get ameasure of the student's overall knowledge of the material.Quizzes Exams Final Only4142G = 3635ΣΧ164=72T= 20 T= 12T=4SS = 10 SS = 10 SS = 41. Do the data indicate any significant differences among thethree methods? Test with a = .05. Show all calculations(i.e., SS, df, MS and F)a. State the research hypotheses (4 points)b. Identify the critical value (4 points)c. Calculate the test statistic (8 points)d. Evaluate the null hypothesis (4 points)2. Extra Credit: Which testing methods statistically differedfrom one another? (5 pts)Question 4XY2 33 16 54 41. Compute the Pearson Correlation for these data. (10 points)a. Show all calculations (i.e., SS,, SS,, SP)2. Write a regression equation to predict Y values. (5 points)

Name: Question are on images. Question 1A researcher conducts and independen
Uploaded: 2024-03-20T07:07:37.000Z
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Description: Question are on images. Question 1A researcher conducts and independent-measures studyexamining the effectiveness of a group exercise program at anassisted living facility for elderly adults. One group of residentsis selected to participate in the pr