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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
14 terms
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StudBud Administration
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Probability review for AP Statistics
Flashcards
14 cards
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Practice quiz
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Questions
14
Answers
1
What is the probability of having 4 children and they are all boys.
.5
.25
.125
.0625
2
If 60% of seniors have a job, 35% have a car, 20% have both, how many have neither?
5%
25%
95%
huh?
3
What is the probability that you choose a boy given that that person chooses sports?
.625
.32
none of these
.5
4
What is the probability that you choose a female or someone who prefers movies?
.76
.92
.6
cant answer since categories are not independent.
5
what is probability of picking three red cards in a row out of a deck
without
replacing?
none of these
.125
.117
.5
6
Which of the following is false?
if events are disjoint then P(A or B) = P(A)+P(B)
The law of large numbers applies only to long term prob
If events are independent then P(B|A)=P(B)
If replacement occurs events are dependent
7
P(snow)=.15; P(no heat)=.08. Pope is closed if both occur. If ind. what is P(closed Pope)
.012
.23
.07
.12
8
If P(A)=.5 and P(B)=.3 what is P(A or B) if A and B are independent. (Be careful)
none of these
.65
.8
.5
9
If P(B|A)=P(B) and P(A|B)=P(A) then
A and B are not independent or disjoint
A and B are not independent but is disjoint.
A and B are disjoint
A and B are independent
10
Probability
is a number between 0 and 1, non-inclusive
predicts how random events behave long term
may have been created by the devil to hurt teenagers
can not be determined exactly
11
If prob. of being late to school is .08, what is prob. that you are late at least once 5 days?
.92
.08
.32
.341
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
13
If A and B are independent then
P(A|B)=P(A)
P(B|A)=P(B)
P(A and B)=P(A)P(B)
All of these
14
What is the probability of having four children and at least one girl?
.9375
.125
.0625
.5