Giving a test to a group of students, the grades and ages are summarized below A В C Total Under 25 18 16 20 54 25 or over 13 9 8 30 Total 31 25 28 84 If one student is chosen at random, Find the probability that the student was 25 or over OR got an "B".
Giving a test to a group of students, the grades and ages are summarized below A В C Total Under 25 18 16 20 54 25 or over 13 9 8 30 Total 31 25 28 84 If one student is chosen at random, Find the probability that the student was 25 or over OR got an "B".
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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
Transcribed Image Text:Giving a test to a group of students, the grades and ages are
summarized below
A
В
Total
Under 25
18
16
20
54
25 or over
13
9
8
30
Total
31
25
28
84
If one student is chosen at random,
Find the probability that the student was 25 or over OR got
an "B".
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