4. ( The scores of students on the ACT college entrance examination in a recent year had the normal distribution with mean = 20.7 and standard deviation = 5. a. What is the probability that a single student randomly chosen from all those taking the test scores 18 or higher? b. What is the probability that the mean score of a random sample of 25 students from all those taking the test is 18 or higher?
4. ( The scores of students on the ACT college entrance examination in a recent year had the normal distribution with mean = 20.7 and standard deviation = 5. a. What is the probability that a single student randomly chosen from all those taking the test scores 18 or higher? b. What is the probability that the mean score of a random sample of 25 students from all those taking the test is 18 or higher?
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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