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