Question 1

The number of car insurance policy holders is an example of a discrete random variable.

Accepted Answer

A) True 
 B)False

Question 2

What is the probability of observing the sale of no more than two bats on a given day at this sporting goods store?

Accepted Answer

This is P(

Question 3

If two events are mutually exclusive, what is the probability that one or the other occurs?

Accepted Answer

A)  0.25 
B)  0.50 
C)  1.00 
D)  This cannot be determined from the information given. 
A)  0.25 
B)  0.50 
C)  1.00 
D)  This cannot be determined from the information given.

Question 4

If events A and B have nonzero probabilities, then they can be both independent and mutually exclusive.

Accepted Answer

A) True 
 B)False

Question 5

Suppose a randomly selected patron is a female. What is the probability that the patron prefers wine?

Accepted Answer

The answer of Suppose a randomly selected patron is a...

Question 6

The probabilities shown in a table with two rows,   and   and two columns,   and   , are as follows: P(   and   ) = .10, P(   and   ) = .30, P(   and   ) = .05, and P(   and   ) = .55. Then P(   |   ), calculated up to two decimals, is:

Accepted Answer

A)  .33 
B)  .35 
C)  .65 
D)  .67 
A)  .33 
B)  .35 
C)  .65 
D)  .67

Question 7

Suppose that after graduation, you will either buy a new car (event A) or take a trip to Europe (event B). In this case, events A and B are mutually exclusive.

Accepted Answer

A) True 
 B)False

Question 8

If P(A) = 0.25 and P(B) = 0.65, then P(A and B) is:

Accepted Answer

A)  0.25 
B)  0.40 
C)  0.90 
D)  This cannot be determined from the information given. 
A)  0.25 
B)  0.40 
C)  0.90 
D)  This cannot be determined from the information given.

Question 9

If A and B are any two events with P(A) = .8 and P(B|A) = .4, then the joint probability of A and B is:

Accepted Answer

A)  .80 
B)  .40 
C)  .32 
D)  1.20 
A)  .80 
B)  .40 
C)  .32 
D)  1.20

Question 10

Two or more events are said to be mutually exclusive if at most one of them can occur.

Accepted Answer

A) True 
 B)False

Question 11

On average, how many customers would you expect to see in line?

Accepted Answer

Expected number of c

Question 12

What is the probability that a respondent was female?

Accepted Answer

The answer of What is the probability that a respondent...

Question 13

Are gender of patrons and drinking preference independent? Explain.

Accepted Answer

P(W|F) = 0.867, and P(W) = 0.4

Question 14

A sporting goods store sells softball bats. Let X be the numbers of bats sold on a typical day at the store. Based on the store historical data, the probability distribution of X is provided in the table below.
Sales (in units)  
-What is the expected number of bats sold on a typical day?

Accepted Answer

E(x) = 1.3

Question 15

Two or more events are said to be exhaustive if one of them must occur.

Accepted Answer

A) True 
 B)False

Question 16

Which of the following statements is true?

Accepted Answer

A)  Probabilities must be negative. 
B)  Probabilities must be greater than 1. 
C)  The sum of all probabilities for a random variable must be equal to 1. 
D)  The sum of all probabilities for a random variable must be equal to 0. 
A)  Probabilities must be negative. 
B)  Probabilities must be greater than 1. 
C)  The sum of all probabilities for a random variable must be equal to 1. 
D)  The sum of all probabilities for a random variable must be equal to 0.

Question 17

If P(A) = P(A|B), then events A and B are said to be:

Accepted Answer

A)  mutually exclusive 
B)  independent 
C)  exhaustive 
D)  complementary 
A)  mutually exclusive 
B)  independent 
C)  exhaustive 
D)  complementary

Question 18

What is the probability that a respondent chosen at random is a female and does not enjoy shopping for clothing?

Accepted Answer

P(female and does no

Question 19

What is probability of observing the sale of no more than 1 bat at this sporting goods store?

Accepted Answer

P(x≥0) + P

Question 20

If two events are collectively exhaustive, what is the probability that both occur at the same time?

Accepted Answer

A)  0.00 
B)  0.50 
C)  1.00 
D)  This cannot be determined from the information given. 
A)  0.00 
B)  0.50 
C)  1.00 
D)  This cannot be determined from the information given.

The number of car insurance policy holders is an example of a discrete random variable.

What is the probability of observing the sale of no more than two bats on a given day at this sporting goods store?

If two events are mutually exclusive, what is the probability that one or the other occurs?

If events A and B have nonzero probabilities, then they can be both independent and mutually exclusive.

Suppose a randomly selected patron is a female. What is the probability that the patron prefers wine?

The probabilities shown in a table with two rows, and and two columns, and , are as follows: P( and ) = .10, P( and ) = .30, P( and ) = .05, and P( and ) = .55. Then P( | ), calculated up to two decimals, is:

Suppose that after graduation, you will either buy a new car (event A) or take a trip to Europe (event B). In this case, events A and B are mutually exclusive.

If P(A) = 0.25 and P(B) = 0.65, then P(A and B) is:

If A and B are any two events with P(A) = .8 and P(B|A) = .4, then the joint probability of A and B is:

Two or more events are said to be mutually exclusive if at most one of them can occur.

On average, how many customers would you expect to see in line?

What is the probability that a respondent was female?

Are gender of patrons and drinking preference independent? Explain.

A sporting goods store sells softball bats. Let X be the numbers of bats sold on a typical day at the store. Based on the store historical data, the probability distribution of X is provided in the table below. Sales (in units) -What is the expected number of bats sold on a typical day?

Two or more events are said to be exhaustive if one of them must occur.

Which of the following statements is true?

If P(A) = P(A|B), then events A and B are said to be:

What is the probability that a respondent chosen at random is a female and does not enjoy shopping for clothing?

What is probability of observing the sale of no more than 1 bat at this sporting goods store?

If two events are collectively exhaustive, what is the probability that both occur at the same time?

Introduction to Business Analytics

Describing the Distribution of a Single Variable

Finding Relationships Among Variables

Normal, Binomial, Poisson, and Exponential Distributions

Decision Making Under Uncertainty

Sampling and Sampling Distributions

Confidence Interval Estimation

Hypothesis Testing

Regression Analysis: Estimating Relationships

Regression Analysis: Statistical Inference

Time Series Analysis and Forecasting

Introduction to Optimization Modeling

Optimization Models

Introduction to Simulation Modeling

Simulation Models

Data Mining

Importing Data Into Excel

Analysis of Variance and Experimental Design

Statistical Process Control

Filters

Exam 4: Probability and Probability Distributions

The number of car insurance policy holders is an example of a discrete random variable.

What is the probability of observing the sale of no more than two bats on a given day at this sporting goods store?

If two events are mutually exclusive, what is the probability that one or the other occurs?

If events A and B have nonzero probabilities, then they can be both independent and mutually exclusive.

Suppose a randomly selected patron is a female. What is the probability that the patron prefers wine?

The probabilities shown in a table with two rows, and and two columns, and , are as follows: P( and ) = .10, P( and ) = .30, P( and ) = .05, and P( and ) = .55. Then P( | ), calculated up to two decimals, is:

Suppose that after graduation, you will either buy a new car (event A) or take a trip to Europe (event B). In this case, events A and B are mutually exclusive.

If P(A) = 0.25 and P(B) = 0.65, then P(A and B) is:

If A and B are any two events with P(A) = .8 and P(B|A) = .4, then the joint probability of A and B is:

Two or more events are said to be mutually exclusive if at most one of them can occur.

On average, how many customers would you expect to see in line?

What is the probability that a respondent was female?

Are gender of patrons and drinking preference independent? Explain.

A sporting goods store sells softball bats. Let X be the numbers of bats sold on a typical day at the store. Based on the store historical data, the probability distribution of X is provided in the table below. Sales (in units) -What is the expected number of bats sold on a typical day?

Two or more events are said to be exhaustive if one of them must occur.

Which of the following statements is true?

If P(A) = P(A|B), then events A and B are said to be:

What is the probability that a respondent chosen at random is a female and does not enjoy shopping for clothing?

What is probability of observing the sale of no more than 1 bat at this sporting goods store?

If two events are collectively exhaustive, what is the probability that both occur at the same time?

Introduction to Business Analytics

Describing the Distribution of a Single Variable

Finding Relationships Among Variables

Normal, Binomial, Poisson, and Exponential Distributions

Decision Making Under Uncertainty

Sampling and Sampling Distributions

Confidence Interval Estimation

Hypothesis Testing

Regression Analysis: Estimating Relationships

Regression Analysis: Statistical Inference

Time Series Analysis and Forecasting

Introduction to Optimization Modeling

Optimization Models

Introduction to Simulation Modeling

Simulation Models

Data Mining

Importing Data Into Excel

Analysis of Variance and Experimental Design

Statistical Process Control

Filters