Introduction to Probability Unit Test Review Questions
And Answers Verified 100% Correct
What is the probability that his model rocket has landed in a grassy area? - ANSWER
0.4
Which sets can be represented using the Venn diagram below? - ANSWER A =
{animals}; B = {mammals}
The weather report states that the probability it will rain on Wednesday is 30 percent
and the probability that it will rain on Saturday is 60 percent.
What is the probability that it will rain on Wednesday and on Saturday? - ANSWER 18
percent
Consider a single spin of the spinner.
Which events are mutually exclusive? Check all that apply. - ANSWER landing on a
shaded portion and landing on a 3
landing on an unshaded portion and landing on a number less than 2
A spinner is divided into eight equal-sized sections, numbered from 1 to 8, inclusive.
What is true about spinning the spinner one time? Check all that apply. - ANSWER S =
{1, 2, 3, 4, 5, 6, 7, 8}
If A is a subset of S, A could be {1, 2, 3}.
If a subset A represents the complement of spinning an odd number, its sample space
is A = {2, 4, 6, 8}.
Jillian has three different bracelets (X, Y, and Z) to give to her friends as gifts in any
order she prefers. If bracelet Y is chosen first, in how many ways can Jillian give out the
bracelets? - ANSWER 2
Evaluate the expression.
9!/3! - ANSWER 60,480
Pedro has determined that the probability his shot will score in a lacrosse game is 0.30.
, What is the probability that he will score on two consecutive shots? - ANSWER 0.09
Christina is randomly choosing three movies to take on vacation from nine action
movies, seven science fiction movies, and four comedies. Which statement is true? -
ANSWER The probability that Christina will not choose all action movies can be
expressed as 1 − 9C3/20C3.
Consider the sets below.
A {x|x is a polygon}
B {x|x is a triangle}
Which is true? - ANSWER B A
The Venn diagram shows the number of patients seen at a pediatrician's office in one
week for colds, C, ear infections, E, and allergies, A.
How many patients had allergies or ear infections, but not both? - ANSWER 36
Sonji bought a combination lock that opens with a four-digit number created using the
digits 0 through 9. The same digit cannot be used more than once in the combination.
If Sonji wants the last digit to be a 7 and the order of the digits matters, how many ways
can the remaining digits be chosen? - ANSWER 504
In a standard deck of cards there are 13 spades, 13 clubs, 13 hearts, and 13 diamonds.
The spades and the clubs are black and the hearts and the diamonds are red.
If two cards are chosen at random from a deck, one at a time, and replaced after each
pick, what is the probability that a black card is chosen first and a heart is chosen
second? - ANSWER 1/8
Eight identical slips of paper, each containing one number from one to eight, inclusive,
are mixed up inside a bag. Subset A of the sample space represents the complement of
the event in which the number 6 is drawn from the bag.
Which shows subset A? - ANSWER A = {1, 2, 3, 4, 5, 7, 8}
The diagram shows the number of children who have ever used motorized scooters,
manual scooters, and/or bicycles.
And Answers Verified 100% Correct
What is the probability that his model rocket has landed in a grassy area? - ANSWER
0.4
Which sets can be represented using the Venn diagram below? - ANSWER A =
{animals}; B = {mammals}
The weather report states that the probability it will rain on Wednesday is 30 percent
and the probability that it will rain on Saturday is 60 percent.
What is the probability that it will rain on Wednesday and on Saturday? - ANSWER 18
percent
Consider a single spin of the spinner.
Which events are mutually exclusive? Check all that apply. - ANSWER landing on a
shaded portion and landing on a 3
landing on an unshaded portion and landing on a number less than 2
A spinner is divided into eight equal-sized sections, numbered from 1 to 8, inclusive.
What is true about spinning the spinner one time? Check all that apply. - ANSWER S =
{1, 2, 3, 4, 5, 6, 7, 8}
If A is a subset of S, A could be {1, 2, 3}.
If a subset A represents the complement of spinning an odd number, its sample space
is A = {2, 4, 6, 8}.
Jillian has three different bracelets (X, Y, and Z) to give to her friends as gifts in any
order she prefers. If bracelet Y is chosen first, in how many ways can Jillian give out the
bracelets? - ANSWER 2
Evaluate the expression.
9!/3! - ANSWER 60,480
Pedro has determined that the probability his shot will score in a lacrosse game is 0.30.
, What is the probability that he will score on two consecutive shots? - ANSWER 0.09
Christina is randomly choosing three movies to take on vacation from nine action
movies, seven science fiction movies, and four comedies. Which statement is true? -
ANSWER The probability that Christina will not choose all action movies can be
expressed as 1 − 9C3/20C3.
Consider the sets below.
A {x|x is a polygon}
B {x|x is a triangle}
Which is true? - ANSWER B A
The Venn diagram shows the number of patients seen at a pediatrician's office in one
week for colds, C, ear infections, E, and allergies, A.
How many patients had allergies or ear infections, but not both? - ANSWER 36
Sonji bought a combination lock that opens with a four-digit number created using the
digits 0 through 9. The same digit cannot be used more than once in the combination.
If Sonji wants the last digit to be a 7 and the order of the digits matters, how many ways
can the remaining digits be chosen? - ANSWER 504
In a standard deck of cards there are 13 spades, 13 clubs, 13 hearts, and 13 diamonds.
The spades and the clubs are black and the hearts and the diamonds are red.
If two cards are chosen at random from a deck, one at a time, and replaced after each
pick, what is the probability that a black card is chosen first and a heart is chosen
second? - ANSWER 1/8
Eight identical slips of paper, each containing one number from one to eight, inclusive,
are mixed up inside a bag. Subset A of the sample space represents the complement of
the event in which the number 6 is drawn from the bag.
Which shows subset A? - ANSWER A = {1, 2, 3, 4, 5, 7, 8}
The diagram shows the number of children who have ever used motorized scooters,
manual scooters, and/or bicycles.
