OpenStax, Introductory Business 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 $\cap$ S) = P(M $∣$ S)P(S).
(b) What is the probability that Felicity enrolls in math or speech classes?
Find P(M $\cup$ S) = P(M) + P(S) - P(M $\cap$ S).
(c) Are M and S independent? Is P(M $∣$ S) = P(M)?
(d) Are M and S mutually exclusive? Is P(M $\cap$ S) = 0?

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OpenStax, Introductory Business Statistics 2e · §3.3 Two Basic Rules of Probability · Example 3

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