A psychologist wants to see how effective 3 different treatments are on depression. One group gets...

A psychologist wants to see how effective 3 different treatments are on depression. One group gets medication only, one group only gets counseling, and one group only receives a diet supplement. Depression scores after the treatments are listed below:

Medication	Counseling	Diet Supplement
23	38	40
16	32	28
15	29	33
32	42	42
26	25	35

Use the .05 level of significance, state your research question, critical value, include your ANOVA Source Table and calculations, and state whether you retain/reject the null hypothesis

Use Tukey’s HSD test (α = .05) as a follow-up to determine the pattern of differences among the means. Show your calculations and write a few sentences interpreting the differences between the three groups.

Solutions

Expert Solution

orchestra answered 1 year ago

Next > < Previous

Related Solutions

A researcher tests whether 4 treatments for depression are different, and gets a significant value for...

A researcher tests whether 4 treatments for depression are different, and gets a significant value for F. What can the researcher conclude about differences between groups? What can the researcher not conclude about differences between groups?  

An educational psychologist wants to know if a popular new hypnosis technique impacts depression. The psychologist...

An educational psychologist wants to know if a popular new hypnosis technique impacts depression. The psychologist collects a sample of 15 students and gives them the hypnosis once a week for two months. Afterwards the students fill out a depression inventory in which their mean score was 50.55. Normal individuals in the population have a depression inventory mean of 51 with a standard deviation of 3.1. What can be concluded with α = 0.01? a) What is the appropriate test...

A clinical psychologist is interested in knowing if different types of treatments have an effect on...

A clinical psychologist is interested in knowing if different types of treatments have an effect on the number of flashbacks per week experienced by Iraq War veterans. She randomly selected a group of 24 veterans with posttraumatic stress disorder (PTSD) from the local VA hospital. Each person is randomly assigned to one of three groups: Group 1 is a waiting list control group (no treatment); Group 2 receives Eye Movement Desensitization and Reprocessing (EMDR); and Group 3 gets cognitive-behavioral therapy...

An educational psychologist wants to see the impact of mnemonics on memory. To test this the...

An educational psychologist wants to see the impact of mnemonics on memory. To test this the psychologist designs a study where participants are randomly assigned to a mnemonic method or not. However, before the participants are assigned they are paired for vocabulary knowledge. All the participants are then asked to read a passage from a book. A few days later, the participants are asked to reproduce the passage. Below are the number of correctly recalled words when reproducing the passage....

A clinical psychologist has run a between-subjects experiment comparing two treatments for depression (cognitive-behavioral therapy (CBT)...

A clinical psychologist has run a between-subjects experiment comparing two treatments for depression (cognitive-behavioral therapy (CBT) and client-centered therapy (CCT) against a control condition. Subjects were randomly assigned to the experimental condition. After 12 weeks, the subject’s depression scores were measured using the CESD depression scale. The data are summarized as follows: Using the following data, perform a oneway analysis of variance using α=.05 Sample 1 cognitive-behavioral therapy (CBT Sample 2 Client-centered therapy (CCT) Sample 3 Control Group M =...

A psychologist wants to see if a certain company has fair hiring practices in an industry...

A psychologist wants to see if a certain company has fair hiring practices in an industry where 60% of the workers are men and 40% are women. She finds that the company has 55 women and 52 men. Test to see if these numbers are different from the industry numbers, and if so, how are they different? Use alpha = .05 and four steps. what is the critical value of the test statistic?

Explain the basic premise of how phobias occur and one effective therapy that psychologist can use...

Explain the basic premise of how phobias occur and one effective therapy that psychologist can use to treat them. Use a specific phobia in your answer to demonstrate your understanding.

A researcher is interested in evaluating two different treatments developed to treat depression. Test her hypothesis...

A researcher is interested in evaluating two different treatments developed to treat depression. Test her hypothesis that the treatments lead to different results. Her data are below (a higher value indicates higher depression). YOU NEED TO CALCULATE THE MEANS AND THE STANDARD DEVIATIONS FOR YOUR DATA. Relaxation Meditation 24 32 22 32 31 27 27 23 23 38 34 34 28 23 Formulate the hypotheses. Determine the critical value(s). Calculate the test statistic. Calculate and evaluate Cohen’s d and r2....

3. A psychologist is interested in the effects of social pressure. She selects a group of...

3. A psychologist is interested in the effects of social pressure. She selects a group of 10 male subjects at random from her introductory psychology course. Each subject is asked to estimate by eye the length of a stick under two conditions. In one condition, the subject is placed in the presence of four other persons who, unknown to him, have been instructed to give estimates that are too large. Each of these persons...

3. A psychologist wants to determine the effect of instructions on the time required to solve...

3. A psychologist wants to determine the effect of instructions on the time required to solve a mechanical puzzle. Each of 20 volunteers is given the same mechanical puzzle to be solved as rapidly as possible. Before the task, the subjects are randomly assigned in equal numbers to receive two different sets of instructions. One group is told that their task is difficult (M1), and the other group is told that their task is easy (M2). The score for each...

Subjects