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Trim II RV Probability Flashcards | StudBud
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Trim II RV Probability
Trim II RV Probability
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Questions
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Answers
1
What's the probability that the donor isn't Type A and that his/her spouse is Type B or AB?
.112
.88
.168
.68
2
Given a person voted for Clinton, what's the probability it was a man?
.875
.14
.08
.07
3
What percent of the votes were for Washington?
17%
77%
23%
83%
4
What's the probability of Kevin Benson having fun today?
1.1%
53%
69%
41%
5
What is the definition of independent events?
One event doesn't influence the next
Two events can happen at the same time
Two events can't happen at the same time
The outcome of one event influences the outcome of the next
6
Which of the following are disjoint events?
Playing the piano and singing at the same time
Rolling doubles with two dice
Playing basketball and hockey at the same time
Flipping three coins and getting three heads
7
What's the probability that a donor is Type O or Type A?
.72
.22
.40
.32
8
The prob of Tommy taking a nap is .37 and the prob of Matt going to swim practice is .44.
.353
.190
.277
.136
9
What is the definition of mutually exclusive events?
The outcome of the first event has no effect on the next
The outcome of the first event effects the next event
Two events that can happen at the same time
Two events that cannot happen at the same time
10
You are dealt a hand of three cards. Find the probability that you have at least one queen.
0.213
.068
0.217
.204
11
How do we know if two events are disjoint?
P(A)=P(B)
P(A U B)=0
P(B|A)=1
P(A|B)=0
12
What's the probability that a donor
isn't
Type AB or Type A?
.50
.60
.35
.40
13
What's the probability that a person voted for Clinton or Kennedy given that she is a woman?
.500
.485
.375
.565
14
What's the probability that Kevin Benson will be present in school and have fun?
60%
50%
20%
6%
15
Given a normal deck of cards, what's the probability of drawing a king or a club?
.333
.288
.308
.327
16
(No repeats & 10 songs) What's the prob of playing I Don't Care, Dead! and Teenagers in order?
.001
.0083
.0014
.003
17
How do we know if two events are independent?
P(B|A)=P(B)
P(B|A)=.5
P(A ∩ B) = 0
P(B|A)=P(A)
18
Which of the following are independent events?
Studying for the Stats exam, then getting an A on the exam.
Having Crispitos for lunch on Monday, then again Tuesday
Being dealt an ace then a king in blackjack
Rolling a sum of 7, then another 7
19
If P(Fc) = 0.40 and P(A ∩ F) = . 25, find P(A|F) if A and F are not independent.
.583
.694
.250
.417
20
100 classrooms were sampled. 22% had Chromebooks, 54% had iPads, 10% had both.
44
12
63
34
21
What's the probability of randomly selecting a man who voted for Lincoln?
0.0293
0.0229
0.0432
0.0675
22
After listening to all 3 Fall Out Boy songs, what the prob of hearing 5th Period or Dead! ?
.286
.25
.333
.2
