OpenStax, Introductory Statistics 2e §3.3 Two Basic Rules of Probability · Example 3 · Probability · Counting & chance
Two Basic Rules of Probability · Example 3
(a) What is the probability that Felicity enrolls in math and speech?
Find P(M AND S) = P(M|S)P(S).
(b) What is the probability that Felicity enrolls in math or speech classes?
Find P(M OR S) = P(M) + P(S) - P(M AND S).
(c) Are M and S independent? Is P(M|S) = P(M)?
(d) Are M and S mutually exclusive? Is P(M AND S) = 0?
OpenStax, Introductory Statistics 2e · §3.3 Two Basic Rules of Probability · Example 3
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