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Basic Probability Review
Basic Probability Review
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Probability questions for statistics class.
Flashcards
19 cards
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Questions
19
Answers
1
On a single roll of a standard die, what is the probability that a 3 will NOT appear?
0
3/6
5/6
1/6
2
You roll a fair six-sided die once. What is the probability of getting an
even number
?
1/2
1/6
0
1/3
3
Given a bag with 12 red and 7 green marbles, what is the odds of randomly selecting a
red
one?
1/2
7/12
12/19
7/19
4
What is the probability that a number less than 7 will appear when you roll a die one time?
0
1
1/6
1/2
5
On a single roll of a standard die, what is the probability that an odd number will appear?
1/2
1/6
1
0
6
If the probability of an event happening is ¼, then the probability of it not happening is ¾.
True
False
7
What is the probability of rolling a number
greater than 4
?
0
1/2
1/3
1
8
What is a sample space?
The favorable outcomes of an event.
The area where samples are.
The total possible outcomes of an event.
9
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.
10
If I toss a fair coin twice and get T/T, what is the probability that tails appears next toss?
1.50
1
0.5
0
11
If an event is
impossible
, it has a probability of zero.
True
False
12
If I toss a fair coin, what is the probability that tails appears?
0
None of the these
0.5
1
13
What are the odds of rolling a 7 when you roll one dice?
0
5/6
3/6
1/6
14
An event with a probability of 0.1 ...
is not very likely to occur.
is very likely to occur.
cannot occur.
is certain to occur.
15
If an event is
certain to occur
, it has a probability of zero.
False
True
16
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.
5/21
17
What is theoretical probability?
The probability based on what has happened in an experiment.
The probability that should happen.
18
Two dice are rolled. What is the probability that the sum is 12?
1/36
1/12
1/6
0
19
A women has three sons. What is the probability that her next child will be a girl?
0
1/2
1/8
1/4
