(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
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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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