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Probability that a randomly selected employee...... A) was in the under 25 age group AND approved ______ B)was in the under 25 age group OR was indifferent _________ Given that an employee was in the over 40 age group, what is the probability that the employee C) approved

Probability that a randomly selected employee...... A) was in the under 25 age group AND approved ______ B)was in the under 25 age group OR was indifferent _________ Given that an employee was in the over 40 age group, what is the probability that the employee C) approved

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Hi, these are the questions I got wrong. I am struggling understanding how to solve the "AND" probability and the "OR" probability, and what makes them different. Thank you :)

frequency distribution 

Age Group approve Disapprove Indifferent Total
Under 25 21 30 29 80
25 to 40 23 24 9 56
over 40 29 34 22 85
Total 73 88 60 221

Probability that a randomly selected employee......

A) was in the under 25 age group AND approved ______

B)was in the under 25 age group OR was indifferent _________

Given that an employee was in the over 40 age group, what is the probability that the employee

C) approved

D)was NOT indifferent

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