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