(a) In 2017, the median income of families in the United States was $60,336. What is the...

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(a) In 2017, the median income of families in the United States was $60,336. What is the probability that a randomly selected family has an income greater than $60,336?
(b) The middle 50% of enrolled freshmen at Washington University in St. Louis had SAT math scores in the range 700–780. What is the probability that a randomly selected freshman at Washington University has an SAT math score of 700 or higher?

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Fundamentals Of Statistics

ISBN: 9780136807346

6th Edition

Authors: Michael Sullivan III

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