Statistics Project 2
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The document discusses conditional probability and calculating the probability of events occurring. It provides the formulas for finding the probability of event A or B occurring when the events are either mutually exclusive or not. It then works through three examples of finding the probability of randomly selecting certain cards from a standard deck, including the probability of selecting a heart or 3, a black suit or king, and a 5 or face card.
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Statistics Project 2
- 2. the probability that event A or event B will occur is, P(A or B) = P(A) + P(B) – P(A or B) If events A and B are mutually exclusive then, P(A or B) = P(A) + P(B)
- 3. A card is selected at random from a standard deck. Find each probability. (a) Randomly selecting a heart or a 3 (b) Randomly selecting a black suit or a king (c) Randomly selecting a 5 or a face card
- 4. A. P(heart)+P(3)=13/52 + 4/52 – 1/52 = 16/52 = .308 B. P(black suit)+P(K)=26/52 + 4/52 – 2/52 = 28/52 = .538 C. P(5)+P(face card)=4/52 + 16/52 = 20/52 = 5/13 = .384