Grad school stats:In independent samples t-tests, power is a function not only of N, but also of
Fantastic news! We've Found the answer you've been seeking!
Question:
Grad school stats:In independent samples t-tests, power is a function not only of N, but also of how close to equal the ns are in each group. Compute a table showing the power for effect sizes of 0.4, 0.6, and 0.8 when the ns for the two groups are: 10 and 50, 20 and 40, and 30 and 30.
Which of the three effect sizes is most affected by the N not being equal? Why?
Expert Answer:
Answer rating: 100% (QA)
Type of experiment 2group design 2 samples independent test Effect ... View the full answer
Posted Date:
Students also viewed these accounting questions
-
Two independent random samples of sizes n1 = 4 and n2 = 5 are selected from each of two normal populations: a. Calculate s2, the pooled estimator of s2. b. Find a 90% confidence interval for (1 - 2),...
-
Two independent random samples of sizes 18 and 24 were obtained to make inferences about the difference between two means.What is the number of degrees of freedom? Discuss both cases.
-
Independent random samples of sizes 400 are taken from each of two populations having equal means and the standard deviations 1 = 20 and 2 = 30. Using Chebyshevs theorem and the result of Exercise...
-
A charge q is placed a distance from the origin, and a charge 2q is placed a distance 2r. There is a charge Q at the origin. If a charges are positive, which charge is at the higher potential? A q B)...
-
As discussed in the chapter, abnormal earnings (AE) are AEt = Actual earningst - Required earningst which may be expressed as AEt = NOPATt - (r x BVt-1) where NOPAT is the firms net operating profit...
-
The Ajax Corporation has the following set of projects available to it: *Note: All projects have equal risk. Ajax can raise funds with the following marginal costs: First $250 million..............
-
Suppose you write 20 call option contracts with a $40 strike. The premium is $2. Evaluate your potential gains and losses at option expiration for stock prices of $30, $40, and $50.
-
Researchers are interested in the effect of a certain nutrient on the growth rate of plant seedlings. Using a hydroponics grow procedure that utilized water containing the nutrient, they planted six...
-
The p-value for a hypothesis test turns out to be 0.034895. At a 6% level of significance, what is the proper decision? Fail to reject Ho Reject Ho
-
Lucy is in charge of planning and coordinating a project. Following is the activity information for this project. Time (weeks) Activity Preceded By Optimistic Most Likely Pessimistic Lucy is in...
-
Assume that U.S. and Argentine investors require a real return of 2 percent. If the U.S. nominal interest rate is 5 percent, and Argentina's nominal interest rate is 7 percent, then according to the...
-
= 1. The following table summarizes the opinion about afterlife for different races and gen- ders from a General Social Survey. The response is "belief in life after death" yes, 2 undecided, 3 = no),...
-
ROBO 351 HST Assignment Design and drive selection for a hydrostatic application. Choose any propelled equipment with open or closed loop HST. 1. Include the pay load and/or any machine function...
-
In psychology there are certain studies that are classic. You can't escape an introduction to psychology course without knowing about certain individuals, i.e., Freud, or certain studies such as this...
-
Problem 4-7 Financial Ratios (LO3) Here are simplified financial statements for Phone Corporation in a recent year: INCOME STATEMENT (Figures in $ millions) Net sales $ 12,800 Cost of goods sold...
-
Here are simplified financial statements for Phone Corporation in 2020: INCOME STATEMENT (Figures in $ millions) Net sales $ 13,700 Cost of goods sold 4,360 Other expenses 4,047 Depreciation 2,698...
-
(2) (10 Points Total) Consider the system of linear equations 3x+2y 1- x+2y+3-0 -3x-2y =1 (a) (2 points) Write down the augmented matrix for this system. (b) (4 points) Produce the row-echelon form...
-
Evaluate the line integral, where C is the given curve. C x 2 dx + y 2 dy, C consists of the arc of the circle x 2 + y 2 = 4 from (2, 0) to (0, 2) followed by the line segment from (0, 2) to (4, 3)
-
Your company is evaluating a new project, and you've estimated that the cost of capital for the project will be 8 percent. Assume that you have also projected the following cash flows for the...
-
Cedeno Company has decided to introduce a new product. The new product can be manufactured by either a capital-intensive method or a labor-intensive method. The manufacturing method will not affect...
-
Your company is evaluating a new project, and you've estimated that the cost of capital for the project will be 8 percent. Assume that you have also projected the following cash flows for the...
Study smarter with the SolutionInn App