Completely Randomized ANOVA

Forty eight subjects were randomly assigned to one of 4 treatment conditions in a study of different methods of coping with statistics exam anxiety. After the experiment, 12 subjects remained in group 1, 8 in group 2, 10 in group 3, and 10 in group 4. The mean anxiety score of group 1 was found to be 5.5 points higher than the mean of group 2, 3.5 points higher than the mean of group 3, 5.3 points higher than the mean of group 4, and 3.3 points higher than the grand mean. Interestingly, the sum of squares error was exactly 12.0 times larger than its degrees of freedom.

Did the different treatments result in significantly different amounts of anxiety? (á.01)

ANS: F = 5.83, Reject Ho


You might be able to fill in values using an ANOVA table to determine your F-ratio, since you can determine degrees of freedom and sum of squares error from what you are given in the problem.

  1. 👍
  2. 👎
  3. 👁

Respond to this Question

First Name

Your Response

Similar Questions

  1. Computer

    Multiple Choice Which of the following study tools would work well for memorizing vocabulary? A. making an outline B. summarizing the textbook C. flash cards D. comparing notes to the text Which of the following can be helpful

  2. Science

    1.) Why is it important to have a quiet study space? It is easier to concentrate in a quiet space, and concentration is needed to learn. * It is easier to leave all your study material in a quiet study space so you can find it. A

  3. math

    A school has 63 students studying Physics, Chemistry and Biology. 33 study Physics, 25 Chemistry and 26 Biology. 10 study Physics and Chemistry, 9 study Biology and Chemistry while 8 study both Physics and Biology. Equal numbers

  4. Mathematics

    A social scientist conducts a study with 10 subjects. In which situations is a permutation necessary to determine the number of possible outcomes? Select all that apply. A. Create a seating chart for the 10 subjects around a

  1. Statistics

    A nutritionist wants to conduct a study to validate the efficacy of an herb as an aid in weight loss. She randomly assigns half of a group of overweight persons to a treatment group who are given the herb with instructions for its

  2. Math

    In a group of 40 students, 22 study Economics, 25 study Law, and 3 study neither of these subjects. Determine the probability that a randomly chosen student studies: 1. Both Economics and Law 2. At Least one of these subjects 3.

  3. maths

    in a class of 35 students twice as many study chemistry and study physics half a many study chemistry as study both subjects illustrate it on a venn diagram

  4. Statistics

    Anger and Snap Judgments Read the article entitled “Anger Can Cause Snap Judgments” and answer the following questions. ANGER CAN CAUSE SNAP JUDGMENTS Anger can make a normally unbiased person act with prejudice, according to

  1. math

    Austin spends 2 hours on his homework. He spends equal amounts of time on all subjects. If Austin spends one over three of an hour on math, how many subjects does he study? A. 3 subjects B. 4 subjects C. 5 subjects D. 6 subjects

  2. statistics

    A researcher reports an F-ratio with df = 2, 36 from an independent-measures research study. Based on the df values, how many treatments were compared in the study and what was the total number of subjects participating in the

  3. statistics/psyc

    Researchers are interested in the effectiveness of a particular treatment for insomnia. Fifty insomnia sufferers who responded to a newspaper ad are contacted, and each is given a pill with instructions to take it before going to

  4. AP Statistics

    A study sought to determine whether the ancient Chinese art of acupuncture could help infertile women become pregnant. 160 healthy women undergoing treatment for infertility were recruited for the study. Half of the subjects were

You can view more similar questions or ask a new question.