When does P(A or B) = P(A) + P(B)? A. Always. B. Never. C. When events A

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When does P(A or B) = P(A) + P(B)? 

A. Always. 

B. Never. 

C. When events A and B occur at the same time. 

D. When events A and B are complements of each other. 

E. When events A and B are mutually exclusive.

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Introduction To Statistical Investigations

ISBN: 9781119683452

2nd Edition

Authors: Beth L.Chance, George W.Cobb, Allan J.Rossman Nathan Tintle, Todd Swanson Soma Roy

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