26. A researcher compared the time (in seconds) that children in two classrooms remainedseated during a behavioral task. The null hypothesis is that the two classrooms will notdiffer. She reports a 95% Cl = -2.1 to 32.6 seconds. What would the decision have beenfor this hypothesis test?

Answered: Image /qna-images/answer/b5236e16-31bb-4227-b1ca-f2ef1c4b3fbe.jpg

Answered: 26. A researcher compared the time (in…

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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GSS 2018 respondents were asked to rate their level of agreement to the statement, “Differences in income in America are too large.” Responses were measured on a 5-point scale: 1 = strongly agree, 2 = agree, 3 = neutral, 4 = disagree, and 5 = strongly disagree. Strong Democrats had an average score of 1.69 (s = 1.04, N = 86) while strong Republicans had an average score of 2.11 (s = 1.05, N = 67). The estimated standard error of the difference between meansis 0.17. What is the appropriate test statistic? Why? Test the null hypothesis with a one-tailed test (strong Democrats are more likely to agree with the statement than strong Republicans); α = .05. What do you conclude about the difference in attitudes for these two political groups? If you conducted a two-tailed test with α = .05, would your decision have been different?
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26. A researcher compared the time (in seconds) that children in two classrooms remained seated during a behavioral task. The null hypothesis is that the two classrooms will not differ. She reports a 95% Cl = -2.1 to 32.6 seconds. What would the decision have been