18. Suppose that the distribution of scores on the Graduate Record Exam (GRE) is approximately normal,with a mean of u = 150 and a standard deviation of o5. For the population of students who have taken%3|the GRE:a. What proportion have GRE scores less than 145?b. What proportion have GRE scores greater than 157?c. What is the minimum GRE score needed to be in the highest 20% of the population?d. If a graduate school accepts only students from the top 10% of the GRE distribution, what is theminimum GRE score needed to be accepted?

a. Consider that the mean and standard deviation of a random variable X are µ and σ, respectively.…

Answered: Suppose that the distribution of scores…

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 grocer finds that the cantaloupes in his store have weights with mean 0.7 kg and standard deviation 53 grams. If this is true, then 99.7% of cantaloupes will have weights between how many grams?
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