Essential Statistics for the Behavioral Sciences. Second Edition Chapter 10, #22: A clinical psychologist noticed that...

Essential Statistics for the Behavioral Sciences. Second Edition Chapter 10, #22: A clinical psychologist noticed that the siblings of his obese patients are often not overweight. He hypothesized that the normal-weight siblings consume fewer daily calories than the obese patients. To test this using a matched-pairs design, he compared the daily caloric intake of obese patients to that of a "matched" normal-weight sibling. The calories consumed for each sibling pair are given in the table. Normal-Weight Sibling: 1600, 1800, 2100, 1800, 2400, 2800, 1900, 2300, 2000, and 2050. Overweight Sibling: 2000, 2400, 2000, 3000, 2400, 1900, 2600, 2450, 2000, and 1950. [a] Test whether or not obese patients consumed significantly more calories than their normal-weight siblings at a 0.05 level of significance. State the value of the test statistic and the decision to retain or reject the null hypothesis. [b] Compute effect size using omega-squared. [c] Did the results support the researcher's hypothesis? Explain.

Expert Solution

[a] We have to test whether or not obese patients consumed significantly more calories than their normal-weight siblings at a 0.05 level of significance.The hypotheses will be

[b] The value of the test statistic is -1.0822 at 9 df and p-value is 0.8463 > 0.05 and we fail to reject the null hypothesis.

[b] Effect size using

[c] The results does not support the hypothesis, both the categories consume same calories.

NOTE:- Calculation are done in R. On R.H.S. is output and on L.H.S. is R code.

orchestra answered 1 year ago

Essential Statistics for the Behavioral Sciences. Second Edition Chapter 9, #20: A study evaluating the effects...

Essential Statistics for the Behavioral Sciences. Second Edition Chapter 9, #20: A study evaluating the effects of parenting style (authoritative, permissive) on child well-being observed 20 children (10 from parents who us an authoritative parenting style and 10 from parents who use a permissive parenting style). Children between the ages of 12 and 14 completed a standard child health questionnaire where scores can range between 0 and 100, with higher scores indicating greater well-being. The scores are given in the...

research methods for the behavioral sciences 5th edition pdf Chapter 5. Explain the relationship between a...

research methods for the behavioral sciences 5th edition pdf Chapter 5. Explain the relationship between a population and a sample. Why is it important that a sample is representative? In what way can it be problematic to have a too large a sample size? What is the difference between a probability sample and a non-probability sample? Give an example of each. Describe how snowball sampling might overcome some of the limitations of a judgemental sample. Give an example how it...

research methods for the behavioral sciences 5th edition pdf Chapter 8 Identify the main features of...

research methods for the behavioral sciences 5th edition pdf Chapter 8 Identify the main features of a between subject design. Describe one positive and one negative aspect of a between subject design. Describe two threats to internal validity which can arise with the control group when using a between subject design. Identify the advantage of using a multiple (3+) group design.

research methods for the behavioral sciences 5th edition pdf Chapter 1 1. Name one non-scientific way...

research methods for the behavioral sciences 5th edition pdf Chapter 1 1. Name one non-scientific way of knowing and a problem associated with it and then describe the empirical method of gaining knowledge and why it is better. 2. Describe the conditions under which a scientist would typically use the inductive method and when they would be more likely to use the deductive method of reasoning.

You are a clinical psychologist is interested in comparing the effectiveness of cognitive behavioral therapy,...

You are a clinical psychologist is interested in comparing the effectiveness of cognitive behavioral therapy, relaxation therapy, and no therapy (control group) for treating mild anxiety. An experiment is conducted in which 15 patients with mild anxiety were randomly assigned 5 each to the three groups. After 4 weeks, participants were given an anxiety questionnaire and their scores were recorded. The following data were analyzed. Cognitive Behavioral Therapy Relaxation Therapy Group Control Group 5 6 7 6 8 10...

A clinical psychologist is interested in comparing the effectiveness of short term relaxation and cognitive-behavioral therapy...

A clinical psychologist is interested in comparing the effectiveness of short term relaxation and cognitive-behavioral therapy in treating mild depression. An experiment is conducted in which 15 patients with mild depression are randomly selected and assigned 5 each to a relaxation therapy group, a cognitive/behavioral therapy group, and an attention placebo group. Therapy is administered until the patient is judged no longer depressed or until 10 treatment sessions have elapsed. The following data is obtained. Scores are the number of sessions for each patient....

Example 16: A clinical psychologist compared the effectiveness of cognitive behavioral therapy (CBT) to the effectiveness...

Example 16: A clinical psychologist compared the effectiveness of cognitive behavioral therapy (CBT) to the effectiveness of family therapy (FT) for treating women with anorexia nervosa. The psychologist randomly selected 28 women with anorexia nervosa. 17 of the 28 women were randomly assigned to CBT and the other 11 women were randomly assigned to FT. Each women's weight prior to therapy was subtracted from her weight 3 months after therapy/ Thus the greater the weight difference, the more effective the...

In regards to Statistics: the exploration and and analysis of data (7th edition), chapter 13, question...

In regards to Statistics: the exploration and and analysis of data (7th edition), chapter 13, question 43. Part a of the question asks for the equation of an estimated regression line. The solution is already on chegg, but my question is: why are SSR, Se, and Sb still calculated, after y-hat=2.7...+(0.04...)x has already been solved for?

Business essential edition 12th chapter 17 Describe two ways that firms raise capital and identify the...

Business essential edition 12th chapter 17 Describe two ways that firms raise capital and identify the pros and cons of each method.

5. (17 pts) Pagano: chapter 6, question 22. Here it is: A social psychologist conducts a...

5. (17 pts) Pagano: chapter 6, question 22. Here it is: A social psychologist conducts a study to determine the relationship between religion and self-esteem. Ten eighth graders are randomly selected for the study. Each individual undergoes two tests, one measuring self-esteem and the other religious involvement. For the self-esteem test, the lower the score, the higher self-esteem is; for the test measuring religious involvement, the higher the score, the higher religious involve- ment is. The self-esteem test has a...

Question