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ID: 3177308 • Letter: P
Question
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Provide an appropriate response. The distribution of blood types for 100 Americans is listed in the table. If one donor is selected at random, find the probability of selecting a person with blood type A+ or A-. A) 0.06 B) 0.4 C) 0.02 D) 0.34 A card is drawn from a standard deck of 52 playing cards. Find the probability that the card is an ace or a king. A) 4/13 B) 2/13 C) 8/13 D) 1/13 Given that P(A or B) = 1/3, P(A) = 1/6, and P(A and B) = 1/8, find P(B). A) 3/8 B) 17/144 C) 7/24 D) 5/8 One hundred people were asked, "Do you favor stronger laws on gun control?" Of the 33 that answered "yes" to the question, 14 were male. Of the 67 that answered "no" to the question, six were male. If one person is selected at random, what is the probability that this person answered "yes" or was a male? A) 0.67 B) 0.53 C) 0.39 D) 0.13 The probability that event A will occur is P(A) = Number of successful outcomes/Number of unsuccessful outcomes A) False B) True An unusual event is an event that has a A) Probability which exceeds 1 B) Low probability of occurrence C) Probability of 1 D) A negative probability The events A and B are mutually exclusive. If P(A) = 0.3 and P(B) = 0.2, what is P(A or B)? A) 0.5 B) 0.06 C) 0.1 D) 0 The table lists the drinking habits of a group of college students. If a student is chosen at random, find the probability of getting someone who is a regular or heavy drinker. A) 0.130 B) 0.224 C) 0.667 D) 0.195Explanation / Answer
1. B) 0.4 [(34/100)+(6/100)] = 0.34+0.06=0.4
2. A) 4/13 [(4/52)+(4/52)] = 8/52=4/13
3. C) 7/24
4. C) 39/100=0.39
5. A) False , P(A)= number of favourble events/ total number of events
6. B) Low probability of occurrence
7. A) 0.3+0.2 = 0.5
8. D) 0.195 [(60/400)+(18/400)]=78/400=0.195
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