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Probability revision
Probability revision
34 terms
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StudBud Administration
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Probability questions for statistics class.
Flashcards
34 cards
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Practice quiz
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Questions
34
Answers
1
The area shaded in green is which of the following?
The complement of A
A ∪ B
A ∩ B
None of these.
2
The probability of an event to happen is ¼, then the probability of it not happening is ¾.
False
True
3
On a single roll of a standard die, what is the probability that an odd number will appear?
1
0
3/6
1/6
4
What is the probability of randomly choosing a vowel (a,e,i,o,u) from the English alphabet?
5/26
21/26
None of these.
1/21
5
What is the probability of the set that contains all possible outcomes, P(Ω)?
1
1/2
0
3/4
6
If an event is
impossible
, it has a probability of zero.
False
True
7
Given a bag with 12 red and 7 green marbles, what is the odds of randomly selecting a
red
one?
12/19
7/12
1/2
7/19
8
What is theoretical probability?
The probability that should happen.
The probability based on what has happened.
9
On a single roll of a standard die, what is the probability that a 3 will NOT appear?
3/6
1/6
5/6
0
10
What is the theoretical probability that you draw a
red
card from a shuffled deck of cards?
0
1/13
1/2
1/4
11
Two events are independent if the occurrence of one doesn't affect the probability of the other
False
True
12
An event with a probability of 0.1 ...
is certain to occur.
cannot occur.
is very likely to occur.
is not very likely to occur.
13
What is the probability that you draw the
ace of diamonds
from the deck?
1/13
1/4
0
1/52
14
What is the probability of the empty set, P(∅)?
1/2
3/4
1
0
15
If I toss a fair coin, what is the probability that tails appears?
1/2
1
None of the these
0
16
What is experimental probability?
The probability based on what should happen.
The probability based on what has happened?
17
What is the probability of rolling a number
greater than 4
?
0
1/2
1/3
1
18
If I toss a fair coin twice and get TT, what is the probability that tails appears next toss?
1/2
0
1
2/3
19
Two dice are rolled. What is the probability that the sum is 12?
1/12
1/36
1/6
0
20
The area shaded in green is which of these?
The complement of A
A ∪ B
A ∩ B
None of these.
21
Two coins are tossed. What is the probability of getting two heads, P(HH)?
0
1/4
1/2
1
22
What is the probability that you draw a
diamond
from a well-shuffled deck of cards?
1/2
0
1/13
1/4
23
What is sample space, S?
The total possible outcomes of an event.
The favorable outcomes of an event.
The area where samples are.
24
What is the probability that a number less than 7 will appear when you roll a die one time?
1/2
1
0
1/6
25
What are independent events?
Events where the probabilities ARE related.
Events where the probabilities ARE NOT related.
26
Which of the following experiments does
NOT have equally likely outcomes
?
Choose a number at random from 1 to 7.
Toss a coin.
Choose a letter at random from the word SCHOOL.
27
The area shaded in green is which of the following?
A ∩ B
The complement of A
None of these.
A ∪ B
28
You roll a fair six-sided die once. What is the probability of getting an
even number
?
1/3
0
1/2
1/6
29
What are dependent events?
Events where the probabilities ARE NOT related.
Events where the probabilities ARE related.
30
What is the odds of rolling a 7 when you roll one standard die one time?
1/6
5/6
3/6
0
31
A women has three sons. What is the probability that her next child will be a girl?
1/8
0
1/2
1/4
32
If an event is certain to occur, it has a probability of zero.
False
True
33
What is the probability that you draw an
ace
from a well-shuffled deck?
1/2
1/13
0
1/4
34
What is the symbol for the empty set?
∩
Ω
∅
⊂
