Question 1

Suppose there are seven jelly beans in a bowl-three red and four blue. If a jelly bean is selected at random, what is the probability that it is blue?

Accepted Answer

A) 2/7 
B) 3/7 
C) 4/7 
D) 5/7 
A) 2/7 
B) 3/7 
C) 4/7 
D) 5/7

Question 2

What is your expected value for a game if your probability of winning is 1/5 and your profit is three times your wager? Assume the wager is $1.

Accepted Answer

A) $0.20 
B) -$0.20 
C) -$1.40 
D) $1.40 
A) $0.20 
B) -$0.20 
C) -$1.40 
D) $1.40

Question 3

How many outcomes are possible if we toss a coin 10 times?

Accepted Answer

A) 20 
B) 256 
C) 512 
D) 1024 
A) 20 
B) 256 
C) 512 
D) 1024

Question 4

_____ probability is the probability that one event occurs given that another has occurred.

Accepted Answer

A) Recurrent 
B) Disjunctive 
C) Conditional 
D) Predictive 
A) Recurrent 
B) Disjunctive 
C) Conditional 
D) Predictive

Question 5

ABC College is using a new screening test to test its employees for TB. The following table shows the results of a pilot study:   Assuming that this result is representative of the college, estimate the probability that a randomly chosen employee who tested positive has TB.

Accepted Answer

A) 89.1% 
B) 84.0% 
C) 13.3% 
D) 61.8% 
A) 89.1% 
B) 84.0% 
C) 13.3% 
D) 61.8%

Question 6

The telephone numbers in a small town either begin 373 or 377. How many telephone numbers are available?

Accepted Answer

A) 10,000 
B) 20,000 
C) 30,000 
D) 40,000 
A) 10,000 
B) 20,000 
C) 30,000 
D) 40,000

Question 7

In a standard deck of cards, the jack, queen, and king are called face cards. If you randomly choose a card from the deck, what is the probability that it is a jack or queen given that it is a face card?

Accepted Answer

A) 1/3 
B) 2/3 
C) 10/13 
D) 3/52 
A) 1/3 
B) 2/3 
C) 10/13 
D) 3/52

Question 8

A city study finds that the probability of a car running a red light at a certain intersection during any given day is 9.6%. What is the probability that a car will NOT run the red light on a given day?

Accepted Answer

A) 8.6% 
B) 96.0% 
C) 4.0% 
D) 90.4% 
A) 8.6% 
B) 96.0% 
C) 4.0% 
D) 90.4%

Suppose there are seven jelly beans in a bowl-three red and four blue. If a jelly bean is selected at random, what is the probability that it is blue?

What is your expected value for a game if your probability of winning is 1/5 and your profit is three times your wager? Assume the wager is $1.

How many outcomes are possible if we toss a coin 10 times?

_____ probability is the probability that one event occurs given that another has occurred.

ABC College is using a new screening test to test its employees for TB. The following table shows the results of a pilot study: Assuming that this result is representative of the college, estimate the probability that a randomly chosen employee who tested positive has TB.

The telephone numbers in a small town either begin 373 or 377. How many telephone numbers are available?

In a standard deck of cards, the jack, queen, and king are called face cards. If you randomly choose a card from the deck, what is the probability that it is a jack or queen given that it is a face card?

A city study finds that the probability of a car running a red light at a certain intersection during any given day is 9.6%. What is the probability that a car will NOT run the red light on a given day?

Critical Thinking

Analysis of Growth

Linear and Exponential Change: Comparing Growth Rates

Personal Finance

Statistics

Graph Theory

Voting and Social Choice

Geometry

Filters

Exam 5: Introduction to Probability

Suppose there are seven jelly beans in a bowl-three red and four blue. If a jelly bean is selected at random, what is the probability that it is blue?

What is your expected value for a game if your probability of winning is 1/5 and your profit is three times your wager? Assume the wager is $1.

How many outcomes are possible if we toss a coin 10 times?

_____ probability is the probability that one event occurs given that another has occurred.

ABC College is using a new screening test to test its employees for TB. The following table shows the results of a pilot study: Assuming that this result is representative of the college, estimate the probability that a randomly chosen employee who tested positive has TB.

The telephone numbers in a small town either begin 373 or 377. How many telephone numbers are available?

In a standard deck of cards, the jack, queen, and king are called face cards. If you randomly choose a card from the deck, what is the probability that it is a jack or queen given that it is a face card?

A city study finds that the probability of a car running a red light at a certain intersection during any given day is 9.6%. What is the probability that a car will NOT run the red light on a given day?

Critical Thinking

Analysis of Growth

Linear and Exponential Change: Comparing Growth Rates

Personal Finance

Statistics

Graph Theory

Voting and Social Choice

Geometry

Filters