Question 1

If two events are collectively exhaustive,what is the probability that one or the other occurs?

Accepted Answer

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

Question 2

Condo Sales and Interest Rates ​ The probability that condo sales will increase in the next 6 months is estimated to be 0.30.The probability that the interest rates on condo loans will go up in the same period is estimated to be 0.75.The probability that condo sales or interest rates will go up during the next 6 months is estimated to be 0.90. ​ ​
-{Condo Sales and Interest Rates Narrative} What is the probability that neither condo sales nor interest rates will increase during the next six months?

Accepted Answer

The answer of  Condo Sales and Interest Rates ​...

Question 3

A posterior probability value is a prior probability value that has been:

Accepted Answer

A) modified on the basis of new information. 
B) multiplied by a conditional probability value. 
C) divided by a conditional probability value. 
D) added to a conditional probability value. 
A) modified on the basis of new information. 
B) multiplied by a conditional probability value. 
C) divided by a conditional probability value. 
D) added to a conditional probability value.

Question 4

Hobby Shop Sales Sales records of a hobby shop showed the following number of radio controlled trucks sold weekly for each of the last 50 weeks.   ​ ​
-{Hobby Shop Sales Narrative} What approach would you use in determining the probabilities for next week's sales? Assign probabilities to the outcomes.

Accepted Answer

The relati

Question 5

Messenger Service ​
 Three messenger services deliver to a small town in Oregon.Service A has 60% of all the scheduled deliveries,service B has 30%,and service C has the remaining 10%.Their on-time rates are 80%,60%,and 40% respectively.Define event O as a service delivers a package on time. ​ ​
-{Messenger Service Narrative} Calculate P(A and O).

Accepted Answer

P(A and O)

Question 6

Which of the following is equivalent to P(A|B)?

Accepted Answer

A) P(A and 
B)  
B) P(B|
A)  
C) P(
A) /P(
B)  
D) None of these choices. 
A) P(A and 
B)  
B) P(B|
A)  
C) P(
A) /P(
B)  
D) None of these choices.

Question 7

If A and B are disjoint events with P(A)= 0.70,then P(B):

Accepted Answer

A) can be any value between 0 and 1 
B) can be any value between 0 and 0.70 
C) cannot be larger than 0.30 
D) cannot be determined with the information given 
A) can be any value between 0 and 1 
B) can be any value between 0 and 0.70 
C) cannot be larger than 0.30 
D) cannot be determined with the information given

Question 8

GPA and Class
 A college professor classifies his students according to their grade point average (GPA)and their class rank.GPA is on a 0.0-4.0 scale,and class rank is defined as the under class (freshmen and sophomores)and the upper class (juniors and seniors).One student is selected at random.   ​ ​
-{GPA and Class Narrative} What is the probability that the student is in the upper class?

Accepted Answer

The answer of  GPA and Class
 A college professor...

Question 9

Drunk Drivers 
Six hundred accidents that occurred on a Saturday night were analyzed.Two items noted were the number of vehicles involved and whether alcohol played a role in the accident.The numbers are shown below:   ​ ​
-{Drunk Drivers Narrative} What proportion of accidents involved alcohol or a single vehicle?

Accepted Answer

The answer of Drunk Drivers 
Six hundred accidents that occurred...

Question 10

GPA and Class
 A college professor classifies his students according to their grade point average (GPA)and their class rank.GPA is on a 0.0-4.0 scale,and class rank is defined as the under class (freshmen and sophomores)and the upper class (juniors and seniors).One student is selected at random.   ​ ​
-{GPA and Class Narrative} What is the probability that the student is in the lower class and has GPA over 3.0?

Accepted Answer

The answer of  GPA and Class
 A college professor...

Question 11

Marital Status
An insurance company has collected the following data on the gender and marital status of 570 customers.
 
suppose that a customer is selected at random.
-{Marital Status Narrative} Is marital status independent of gender? Explain using probabilities.

Accepted Answer

No,since P(married /

Question 12

A sample space of an experiment consists of the following outcomes: 1,2,3,4,and 5.Which of the following is a simple event?

Accepted Answer

A) At least 3 
B) At most 2 
C) 3 
D) 15 
A) At least 3 
B) At most 2 
C) 3 
D) 15

Question 13

College Professorship ​ 
A Ph.D.graduate has applied for a job with two colleges: A and B.The graduate feels that she has a 60% chance of receiving an offer from college A and a 50% chance of receiving an offer from college B.If she receives an offer from college B,she believes that she has an 80% chance of receiving an offer from college A.Let A = receiving an offer from college A,and let B = receiving an offer from college B. ​ ​
-{College Professorship Narrative} If she receives an offer from college B,what is the probability that she will not receive an offer from college A?

Accepted Answer

The answer of College Professorship ​ 
A Ph.D.graduate has applied...

Question 14

If two events are mutually exclusive and collectively exhaustive,what is the probability that both occur?

Accepted Answer

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

Question 15

Hobby Shop Sales Sales records of a hobby shop showed the following number of radio controlled trucks sold weekly for each of the last 50 weeks.   ​ ​
-{Hobby Shop Sales Narrative} Define the random experiment of interest to the store.

Accepted Answer

The random experimen

Question 16

There are three approaches to determining the probability that an outcome will occur: classical,relative frequency,and subjective.For each situation that follows,determine which approach is most appropriate.
a.A Russian will win the French Open Tennis Tournament next year.
b.The probability of getting any single number on a balanced die is 1/6.
c.Based on the past,it's reasonable to assume the average book sales for a certain textbook is 6,500 copies per month.

Accepted Answer

a. subjective 
b. cl

Question 17

The collection of all possible outcomes of an experiment is called:

Accepted Answer

A) a simple event 
B) a sample space 
C) a sample 
D) a population 
A) a simple event 
B) a sample space 
C) a sample 
D) a population

Question 18

Which of the following statements is correct if the events A and B have nonzero probabilities?

Accepted Answer

A) A and B cannot be both independent and disjoint 
B) A and B can be both independent and disjoint 
C) A and B are always independent 
D) A and B are always disjoint 
A) A and B cannot be both independent and disjoint 
B) A and B can be both independent and disjoint 
C) A and B are always independent 
D) A and B are always disjoint

Question 19

If joint,marginal,and conditional probabilities are available,only joint probabilities can be used to determine whether two events are dependent or independent.

Accepted Answer

A) True 
 B)False

Question 20

If A and B are mutually exclusive events,with P(A)= 0.20 and P(B)= 0.30,then the probability that both events will occur simultaneously is:

Accepted Answer

A) 0.50 
B) 0.06 
C) 0 
D) None of these choices. 
A) 0.50 
B) 0.06 
C) 0 
D) None of these choices.

If two events are collectively exhaustive,what is the probability that one or the other occurs?

A posterior probability value is a prior probability value that has been:

Hobby Shop Sales Sales records of a hobby shop showed the following number of radio controlled trucks sold weekly for each of the last 50 weeks. -{Hobby Shop Sales Narrative} What approach would you use in determining the probabilities for next week's sales? Assign probabilities to the outcomes.

Which of the following is equivalent to P(A|B)?

If A and B are disjoint events with P(A)= 0.70,then P(B):

Marital Status An insurance company has collected the following data on the gender and marital status of 570 customers. suppose that a customer is selected at random. -{Marital Status Narrative} Is marital status independent of gender? Explain using probabilities.

A sample space of an experiment consists of the following outcomes: 1,2,3,4,and 5.Which of the following is a simple event?

If two events are mutually exclusive and collectively exhaustive,what is the probability that both occur?

Hobby Shop Sales Sales records of a hobby shop showed the following number of radio controlled trucks sold weekly for each of the last 50 weeks. -{Hobby Shop Sales Narrative} Define the random experiment of interest to the store.

The collection of all possible outcomes of an experiment is called:

Which of the following statements is correct if the events A and B have nonzero probabilities?

If joint,marginal,and conditional probabilities are available,only joint probabilities can be used to determine whether two events are dependent or independent.

If A and B are mutually exclusive events,with P(A)= 0.20 and P(B)= 0.30,then the probability that both events will occur simultaneously is:

What Is Statistics

Graphical Descriptive Techniques 1

Graphical Descriptive Techniques 2

Numerical Descriptive Techniques

Data Collection and Sampling

Random Variables and Discrete Probability Distributions

Continuous Probability Distributions

Sampling Distributions

Introduction to Estimation

Introduction to Hypothesis Testing

Inference About a Population

Inference About Comparing Two Populations

Analysis of Variance

Chi-Squared Tests

Simple Linear Regression and Correlation

Multiple Regression

Model Building

Nonparametric Statistics

Time-Series Analytics and Forecasting

Statistical Process Control

Decision Analysis

Conclusion

Filters

Exam 6: Probability

If two events are collectively exhaustive,what is the probability that one or the other occurs?

A posterior probability value is a prior probability value that has been:

Which of the following is equivalent to P(A|B)?

If A and B are disjoint events with P(A)= 0.70,then P(B):

Marital Status An insurance company has collected the following data on the gender and marital status of 570 customers. suppose that a customer is selected at random. -{Marital Status Narrative} Is marital status independent of gender? Explain using probabilities.

A sample space of an experiment consists of the following outcomes: 1,2,3,4,and 5.Which of the following is a simple event?

If two events are mutually exclusive and collectively exhaustive,what is the probability that both occur?

Hobby Shop Sales Sales records of a hobby shop showed the following number of radio controlled trucks sold weekly for each of the last 50 weeks. ​ ​ -{Hobby Shop Sales Narrative} Define the random experiment of interest to the store.

The collection of all possible outcomes of an experiment is called:

Which of the following statements is correct if the events A and B have nonzero probabilities?

If joint,marginal,and conditional probabilities are available,only joint probabilities can be used to determine whether two events are dependent or independent.

If A and B are mutually exclusive events,with P(A)= 0.20 and P(B)= 0.30,then the probability that both events will occur simultaneously is:

What Is Statistics

Graphical Descriptive Techniques 1

Graphical Descriptive Techniques 2

Numerical Descriptive Techniques

Data Collection and Sampling

Random Variables and Discrete Probability Distributions

Continuous Probability Distributions

Sampling Distributions

Introduction to Estimation

Introduction to Hypothesis Testing

Inference About a Population

Inference About Comparing Two Populations

Analysis of Variance

Chi-Squared Tests

Simple Linear Regression and Correlation

Multiple Regression

Model Building

Nonparametric Statistics

Time-Series Analytics and Forecasting

Statistical Process Control

Decision Analysis

Conclusion

Filters

Hobby Shop Sales Sales records of a hobby shop showed the following number of radio controlled trucks sold weekly for each of the last 50 weeks. -{Hobby Shop Sales Narrative} Define the random experiment of interest to the store.