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PROBABILITY Flashcards | StudBud
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PROBABILITY
PROBABILITY
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StudBud Administration
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Probability review for AP Statistics
Flashcards
11 cards
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Practice quiz
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Questions
11
Answers
1
If 60% of seniors have a job, 35% have a car, 20% have both, how many have neither?
huh?
95%
25%
5%
2
what is probability of picking three red cards in a row out of a deck without replacing
.5
none of these
.117
.125
3
P(snow)=.15; P(no heat)=.08. Pope is closed if both occur. If ind. what is P(closed Pope)
.12
.012
.07
.23
4
If P(A)=.5 and P(B)=.3 what is P(A or B) if A and B are independent
.8
.5
none of these
.65
5
What is the probability that you choose a boy given that that person chooses sports
none of these
.32
.5
.625
6
What is the probability of having 4 children and they are all boys.
.0625
.25
.125
.5
7
If P(B|A)=P(B) and P(A|B)=P(A) then
A and B are not independent but is disjoint.
A and B are not independent or disjoint
A and B are independent
A and B are disjoint
8
If P(A)=.5 and P(B)=.3 what is P(A or B) if disjoint?
.3
.5
none of these
.8
9
Probability
may have been created by the devil to hurt teenagers
can not be determined exactly
is a number between 0 and 1, non-inclusive
predicts how random events behave long term
10
If A and B are independent then
P(A and B)=P(A)P(B)
All of these
P(B|A)=P(B)
P(A|B)=P(A)
11
What is the probability that you choose a female or someone who prefers movies?
.6
.92
.76
cant answer since categories are not independent.
