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