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(a) What is the probability that a randomly selected student got grade A? (b) What is the score that 70% of the students could not reach it?

(a) What is the probability that a randomly selected student got grade A? (b) What is the score that 70% of the students could not reach it?

MATLAB: An Introduction with Applications
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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The exam scores of a math assessment test at a college are normally distributed with mean 78.7 and a standard deviation of 5.6. If you know that grade A is given for scores above 90, and grade F is given for scores less than 50, find the following: (a) What is the probability that a randomly selected student got grade A? (b) What is the score that 70% of the students could not reach it?
Transcribed Image Text:The exam scores of a math assessment test at a college are normally distributed with mean 78.7 and a standard deviation of 5.6. If you know that grade A is given for scores above 90, and grade F is given for scores less than 50, find the following: (a) What is the probability that a randomly selected student got grade A? (b) What is the score that 70% of the students could not reach it?
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