The mean number of close friends for the population freshman college students in theU.S.A. is u 5.7. The standard deviation of scores in this population is 1.3. Apsychologist predicts that the mean number of close friends for freshman introvertswill be significantly different from the mean of the population. The mean number ofclose friends for a random sample of 25 freshman introverts isM = 6.5. Set your alpha level at a = .05. Complete steps 3 and 4 of the hypothesistesting procedure. What decision should the researcher make regarding the effect ofintroversion on the number of close friends?=O The researcher should retain Ho and conclude that introversion has no effect on the numberof close friends.The researcher should retain HA and conclude that introversion has no effect on the numberof close friends.O The researcher should reject Ho and conclude that introversion makes a difference in thenumber of close friends one has.O The researcher should reject HA and conclude that introversion makes a difference in thenumber of close friends one has.No answer text provided.

Solution: Let X be the waiting time. From the given information, n=25, M=6.5 and σ=1.3.

Answered: The mean number of close friends for…

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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