Mathematics, 30.11.2020 17:40 chem1014
Let X be the percentage score on a college-entrance exam for students who did not participate in an exam-preparation seminar. X is modeled by a uniform distribution on [a,100]. Let Y be the percentage score on a college-entrance exam for students who did participate in an exam-preparation seminar. Y is modeled by a uniform distribution on [1.25a,100].
It is given that E[X^2]= 19,600/3
Calculate the 80th percentile of Y.
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