Answered: If we are testing for the difference…

If we are testing for the difference between the means of 2 related populations with samples of n1=20 and n2=20, the number of degrees of freedom is equal to ________. a. 18 b. 19 c. 38 d. 39

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Question

If we are testing for the difference between the means of 2 related populations with samples of n1=20 and n2=20, the number of degrees of freedom is equal to ________.

a. 18

b. 19

c. 38

d. 39

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Q23. A social psychologist records the number of outbursts in a sample of different classrooms at a local school. Answer the questions based on the statement below. (Note: These are not the results from Q19) The number of outbursts among students at this local school (M = 3) was significantly less than that in the general population, t(39) = 4.19, p < .05, d = .25. 23a. What was the sample size?n = 23b. What was the decision?A. Retain H0B. Reject H0Decision = 23c. What was the effect size?A. 39B. 4.19C. .05D. .25 Effect size =
How would I answer this?
(2.1)
A sample of 100 people is classified by gender (male/female) and by whether or not they are college graduates. The sample consists of 40 females and 60 males, and has a total of 20 college graduates. If these data are used for a chi-square test for independence, what is the total number of females in the sample? Select one: a. 20 b. 60 c. 70 d. 40
Select the two different ways to state that the means of two populations are different.
Scenario: 200 people were asked, “Who is your favorite superhero?” Below are the data. Test the null hypothesis that the population frequencies for each category are equal. α= .05. Iron Man Black Panther Wonder Woman Spiderman fo = 40 fo = 60 fo =55 fo = 45 fe = fe = fe = fe = Chi Square test statistic = ______ Group of answer choices