25 May Question 51) If the sale of ice cream and pizza are independent,
Question
51) If the sale of ice cream and pizza are independent, then as ice cream sales decrease by 60 percent during the winter months, pizza sales will
A) increase by 60 percent.
B) increase by 40 percent.
C) decrease by 60 percent.
D) decrease by 40 percent.
E) be unrelated.
52) If P(A) = 0.3, P(B) = 0.2, P(A and B) = 0.0, what can be said about events A and B?
A) They are independent.
B) They are mutually exclusive.
C) They are posterior probabilities.
D) None of the above
E) All of the above
53) Suppose that 10 golfers enter a tournament and that their respective skill levels are approximately the same. What is the probability that one of the first three golfers that registered for the tournament will win?
A) 0.100
B) 0.001
C) 0.300
D) 0.299
E) 0.700
54) Suppose that 10 golfers enter a tournament and that their respective skill levels are approximately the same. Six of the entrants are female and two of those are older than 40 years old. Three of the men are older than 40 years old. What is the probability that the winner will be either female or older than 40 years old?
A) 0.000
B) 1.100
C) 0.198
D) 0.200
E) 0.900
55) Suppose that 10 golfers enter a tournament and that their respective skill levels are approximately the same. Six of the entrants are female and two of those are older than 40 years old. Three of the men are older than 40 years old. What is the probability that the winner will be a female who is older than 40 years old?
A) 0.000
B) 1.100
C) 0.198
D) 0.200
E) 0.900
56) “The probability of event B, given that event A has occurred” is known as a ________ probability.
A) continuous
B) marginal
C) simple
D) joint
E) conditional
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