QUESTION 7What is the effect on the power curve?Hint: See L-11 pdf and lecture, page 9-10O1. The power of the test is unchangedO II. The direction of change in power depends on the value ofO III. It increases the power of the testO IV. It reduces the power of the test 5.21 A study was conducted of 90 adult male patients following a new treatment for congestiveheart failure. One of the variables measured on the patients was the increase in exercise capacity(in minutes) over a 4-week treatment period. The previous treatment regime had producedan average increase of u = 2 minutes. The researchers wanted to evaluate whether the newtreatment had increased the value of u in comparison to the previous treatment. The data yieldedỹ = 2.17 and s = 1.05.a. Using a = .05, what conclusions can you draw about the research hypothesis?b. What is the probability of making a Type II error if the actual value of u is 2.1?5.22 Refer to Exercise 5.21. Compute the power of the test PWR(ua) at pa = 2.1, 2.2, 2.3, 2.4,and 2.5. Sketch a smooth curve through a plot of PWR(Ha) versus pa.a. If a is reduced from .05 to .01, what would be the effect on the power curve?b. If the sample size is reduced from 90 to 50, what would be the effect on thepower curve?

Answered: 5.21 A study was conducted of 90 adult…

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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