For our study, we used the following formula: P (A or B) = P (A) + P (B) − P (A and B) (a) Is it ever possible that P (A) = 4.3? Explain why or why not. (b) What would need to be true about A and B to ensure that P (A and B) = 0? Justify your answer. Feel free to use an example probability question where you could define events A and B to help you answer the question.

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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For our study, we used the following formula:

P (A or B) = P (A) + P (B) − P (A and B)

(a) Is it ever possible that P (A) = 4.3? Explain why or why not.

(b) What would need to be true about A and B to ensure that P (A and B) = 0? Justify your answer. Feel free to use an example probability question where you could define events A and B to help you answer the question.

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