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Probability Quiz Review 5.1 / 5.2 Flashcards | StudBud
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Probability Quiz Review 5.1 / 5.2
Probability Quiz Review 5.1 / 5.2
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#probability #statistics
Flashcards
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Questions
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Answers
1
Is this a valid probability model?
Yes - All probabilities add to 1 and are between 0 and 1
No - The probabilities do not add to 1
Yes - All probabilities are greater than 0
No - There aren't enough probabilities
2
Find the probability that a fair die rolled twice will sum to 3 or an even number
18/36
12/26
24/36
20/36
3
What is the probability of randomly selecting a person who owns a sports car?
84/240
39/240
180/240
135/240
4
P(A) = .28 P(B) = .72 P(A and B) = .30 Find P(A U B)
1
.44
.60
.70
5
If the relative frequency (percent) of people who own a blue car is .218 then
At least 21.8 out of every hundred cars will be blue
21.8% of all cars are blue
If 10,000 cars are selected, about 2180 of them will be blue
Out of 1000 people, 218 will have a blue car
6
The probability that a die rolled 3 times will show 2 - 2 - 2 is calculate using which method?
Classical
Subjective
Relative Frequency
7
Find the probability that a person is a female or SUV owner.
39/240
156/240
201/240
84/240
8
A ∩ B
c
means
A or B
A or not in B
A and not in B
Not in A and B
9
What is the probability of drawing a black ace from a standard deck of cards?
1/52
2/52
12/52
4/52
10
A coin is flipped three times. What is the probability of not getting 3 heads or 3 tails?
.25
.125
.5
.75
