2. Describe how each of the following would affect the power of an analysis (increase ordecrease) and why:a. You decide to draw only from a subpopulation within which people have more incommon than in the overall population.b. Your research budget runs dry and you have to stop gathering data before youreach your planned sample size.c. You place a very high priority on making sure the null is not rejected unless it isalmost certainly false.

Statistical power is the probability of a hypothesis test of finding an effect if there is an effect…

Answered: Describe how each of the following…

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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A) We have just conducted a study examining how much math anxiety students experience after taking a statistics class. We want to know if students on average are reporting low (1) or high (7) levels of math anxiety. To do that, we want to compare the math anxiety levels of the students after they have taken a statistics course to the average population math anxiety. We believe that the students on average will have a level of math anxiety that differs from the population. X 3 4 4 5 5 3 1 3 5 6 7 2 2 3 2 3 2 3 1 3 Report our null and alternative hypotheses in words. Given the information we have, what specific t-test do we need to run in order to examine our hypothesis? Provided are the ratings from the students that we recruited (see left), the mean and standard deviation for that sample (see below), and the population average (see below): xbar =3.35, Meu=4.00 and SD=1.60…

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