if a student is selected at random, what is the probability that the student is an upper division under graduate student (junior or senior)? class level number of sudents first year 642 sophomore 549 junior 483 senior 445 graduate student  375

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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if a student is selected at random, what is the probability that the student is an upper division under graduate student (junior or senior)?

class level

number of sudents

first year

642

sophomore

549

junior

483

senior

445

graduate student 

375

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