Compute the estimated cohens d to measure size

Reference no: EM13107844

Many animals, including hums, tend to avoid direct eye contact and even patterns that look like eyes. Some insects, including moths, have evolved eye-spot. Patterns on their wings to help ward off predators. Scaife (1976) reports a study examine how eye-spot patterns affect the behavior of birds. In the study, the birds were tested in a box with two chambers and were free to mover form one chamber to another. In one chamber, two large eye-spots were painted on one wall. The other chamber had plain walls. The researcher recorded the amount of time each bird spent in the plain chamber during a 60-minute session. Suppose the study produced a mean of M = 37 minutes in the plain chamber with SS = 228 for a sample of n = 9 birds. (Note: If the eye-spots have a no affect, then the birds should spend an average of U = 30 minutes in each chambers.) a. Is this sample sufficient influence on the birds' behavior? Use a two-tail method with a =.05. b. Compute the estimated Cohen's d to measure size of the treatment effect. c. Construct the 95 % confidence interval to estimate the mean among of time spent on the plain side for the population of birds.

Reference no: EM13107844

Questions Cloud

Use at least 2 academically credible sources : Post a well-considered paragraph outlining the relationship between morals, ethics, and laws. Use at least 2 academically credible sources, and cite them within (Wikipedia is not an academically credible source).

Calculate current yield : Alaska Power Company issued $1,000 bonds that have an annual coupon rate of 7.5%. The present market value of the bonds is $1,125. If the bonds have 15 years remaining until maturity.

Information on chi-square test statistic : A shoe salesman want to see if his female customers have a preference in the color of shoe purchased. What is the test value for the following data?

Problem on valuation concepts : The management and Directors of Google have stated that there is no plan for Google to ever pay dividends. Yet, the stock trades at a very high price in dollar terms and at a P/E of around 20.

Compute the estimated cohens d to measure size : Many animals, including hums, tend to avoid direct eye contact and even patterns that look like eyes. Some insects, including moths, have evolved eye-spot.

Regular voting for directors of company : Discuss the pros and cons of cumulative voting vice regular voting for Directors of a company. Why would a company choose one over the other? Who benefits from each type: shareholders, management, directors, or some other entity

Chi-square hypothesis test for playing slot machine : A person purchased a slot machine and tested it by playing it 1,245 times. There are 10 different categories of outcomes, including no win, win jackpot, win with three balls, and so on.

What difference between male and female students : A college student is interested in whether there is a difference between male and female students in the amount of time spent studying each week.

Describe advantages and disadvantages of sales presentation : What are the advantages and disadvantages of using prepared, or canned, sales presentation? Give examples of when using a canned presentation might be better than using a less structured presentation.

User Account

All Pages