The number of semester hours of college credit taken by first-time candidates for a certain professional exam has a Normal distribution with a mean of 120 hours and a standard deviation of 16 hours. Consider a random sample of n first-timecandidates for the exam and let x represent the mean number of hours of college credit taken for the sample. Complete parts a through e below.Click the icon to view the table of normal curve areas......a. Describe the shape of the sampling distribution of x.A. The shape is Normal distribution only when sample size is greater than 30B. The shape is Normal distribution for any sample sizeO C. is always the same as the distribution of the populationD. The shape is skewed rightb. If 16 first-time candidates for the exam are randomly selected, what is the probability that the mean number of hours of college credit taken by these students x is between 118 and 122 hours?P(118 < x <122) = (Round to four decimal places as needed.)c. If 64 first-time candidates for the exam are randomly selected, what is the probability that the mean number of hours of college credit taken by these students x is between 118 and 122 hours?P(118 < x <122) :d. Which of the following is the correct graph of the probabiity density functions of x , assuming red = sample size 16, green = sample size 64.(Round to four decimal places as needed.)%3DO A.0+108 112116120124128 132 0+108 112116120124 128 132OC.0+108 112116120 124 128 132B.

As per our guidelines, we are allowed to answer first three sub-parts only. Thanks Mean , μ = 120…

Answered: The number of semester hours of college…

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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