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PROBABILITY THAT AP STAT IS MY FAVORITE CLASS=1 Flashcards | StudBud
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PROBABILITY THAT AP STAT IS MY FAVORITE CLASS=1
PROBABILITY THAT AP STAT IS MY FAVORITE CLASS=1
12 terms
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StudBud Administration
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Probability review for AP Statistics
Flashcards
12 cards
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Practice quiz
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Questions
12
Answers
1
What is the probability that you choose a female or someone who prefers movies?
.76
.92
.6
cant answer since categories are not independent.
2
What is the probability of having 4 children and they are all boys.
.0625
.5
.25
.125
3
What is the probability of having four children and at least one girl?
.5
.9375
.125
.0625
4
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)
5
What is the probability that you choose a boy given that that person chooses sports?
.625
.32
.5
none of these
6
P(snow)=.15; P(no heat)=.08. Pope is closed if both occur. If ind. what is P(closed Pope)
.07
.23
.12
.012
7
If 60% of seniors have a job, 35% have a car, 20% have both, how many have neither?
huh?
5%
95%
25%
8
Which of the following is false?
If events are independent then P(B|A)=P(B)
The law of large numbers applies only to long term prob
if events are disjoint then P(A or B) = P(A)+P(B)
If replacement occurs events are dependent
9
If P(B|A)=P(B) and P(A|B)=P(A) then
A and B are disjoint
A and B are not independent but is disjoint.
A and B are not independent or disjoint
A and B are independent
10
If prob. of being late to school is .08, what is prob. that you are late at least once 5 days?
.92
.341
.32
.08
11
Probability
may have been created by the devil to hurt teenagers
is a number between 0 and 1, non-inclusive
predicts how random events behave long term
can not be determined exactly
12
If P(A)=.5 and P(B)=.3 what is P(A or B) if disjoint (mutually exclusive)?
.5
none of these
.3
.8
