Please solve this question related to Inferential stats in Decision making – 20210628b

Attached questions to the attachments Use the Excel with Data Analysis Tool, SPSS or any Statistical Tool to solve the problems (You can also solve it manually but I prefer you use computer application). Submit the assignment in the Week 9 Assignment drop box. Total points is 50 (10 points each question). Student Name: Date: 1. Developmental psychologists study children at different ages. In this study, the children were tested three times, at ages 5, 6 and 7. At each age, they worked a set of 25 problems. Each problem was a measure of the child’s understanding of the concept of conservation (the concept that quantity remains the same despite changes in shape). The scores below represent percentage correct on the set of 25 problems. Calculate a repeated-measures ANOVA, Tukey HSD tests, and write an interpretation. Age
Child 5 6 7 2. 1 4 12 68 2 12 24 80 3 20 16 88 4 20 20 84 Developmental psychologists study children at different ages. In this study, the children were tested three times, at ages 10, 11 and 12. At each age, they worked a set of 25 logic problems. The scores below represent percentage correct on the set of 25 problems. Calculate a repeated-measures ANOVA, Tukey HSD Age Child 10 11 1 0 8 2 8 12 31224 41620 tests, and write an interpretation. 12 40 36 36 48 3. Drug testing often involves giving participants each of the several dosages as well as a placebo (an inert substance). In this study, the dependent variable was reaction time in hundredths of a second. Calculate a repeated-measures ANOVA, Tukey HSD tests, and write an interpretation. 4. Participant 1 2 3 Dosage
Placebo 15 mg 30 mg 60 mg 36 32 20 18 35 40 25 27 40 42 30 24 Drug testing often involves giving participants each of the several dosages as well as a placebo (an inert substance). In this study, the dependent variable was a test that measured willingness to take risks (large scores mean more willingness). Calculate a repeated-measures ANOVA, Tukey HSD tests, and write an interpretation. Participant 1
2
3 Dosage
Placebo 15 mg 30 mg 60 mg 10 40 31 50 24 48 36 36 32 50 62 55 5. There are many programs that seek to change behavior. One way to assess the effect of a program is to give a pretest, administer the program, and give a posttest. To really prove the lasting value of the program, however, a researcher must gather follow-up data some months later to see if the improvement seen at posttest has continued. In the scores below, larger numbers represent improved performance. Analyze the data, compile it into a summary table, and make three HSD comparisons. Write an interpretation that describes the effect of the program. Three data sets (labeled A, B, and C) are provided for problem 5. Data Set A Pretest Subject 1 Subject 2 Subject 3 Subject 4 Posttest 10 13 17 18 One-year follow-up 28 21 27 24 36 26 31 20 Data Set B Pretest Subject 1 Posttest One-year follow-up 9 23 18 Subject 2 13 Subject 3 17 Subject 4 18 Data Set C Pretest 27 24 36 26 31 20 Posttest One-year follow-up Subject 1 Subject 2 Subject 3 10 28 13 27 17 36 21 24 26