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