Question 1

If A and B are independent,then P(A|B)= P(A)or P(B|A)= P(B).

Accepted Answer

A) True 
 B)False

Question 2

Two events A and B are independent if P(A and B)= 0.

Accepted Answer

A) True 
 B)False

Question 3

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

Accepted Answer

A) .40 
B) .32 
C) 1.20 
D) None of these choices. 
A) .40 
B) .32 
C) 1.20 
D) None of these choices.

Question 4

Prior probability is also called likelihood probability.

Accepted Answer

A) True 
 B)False

Question 5

The probability of the union of two mutually exclusive events A and B is 0.

Accepted Answer

A) True 
 B)False

Question 6

There are situations where we witness a particular event and we need to compute the probability of one of its possible causes.____________________ is the technique we use to do this.

Accepted Answer

Bayes' Law

Question 7

There are ____________________ requirements of probabilities for the outcomes of a sample space.

Accepted Answer

The answer of There are ____________________ requirements of probabilities for...

Question 8

The ____________________ of events A and B is the event that occurs when both A and B occur.

Accepted Answer

The answer of The ____________________ of events A and B...

Question 9

The probability of event A given event B is denoted by

Accepted Answer

A) P(A and 
B)  
B) P(A or 
B)  
C) P(A|
B)  
D) P(B|
A)  
A) P(A and 
B)  
B) P(A or 
B)  
C) P(A|
B)  
D) P(B|
A)

Question 10

Alana,Eva,and Stephanie,three candidates for the presidency of a college's student body,are to address a student forum.The forum's organizer is to select the order in which the candidates will give their speeches,and must do so in such a way that each possible order is equally likely to be selected.
a.What is the random experiment?
b.List the outcomes in the sample space.
c.Assign probabilities to the outcomes.
d.What is the probability that Stephanie will speak first?
e.What is the probability that Alana will speak before Stephanie does?

Accepted Answer

a. The random experiment is to observe t

Question 11

Events A and B are either independent or mutually exclusive.

Accepted Answer

A) True 
 B)False

Question 12

The probability of an event is the ____________________ of the probabilities of the simple events that constitute the event.

Accepted Answer

The answer of The probability of an event is the...

Question 13

If P(A and B)= 1,then A and B must be mutually exclusive.

Accepted Answer

A) True 
 B)False

Question 14

If you roll a balanced die 50 times,you should expect an even number to appear:

Accepted Answer

A) on every other roll. 
B) exactly 50 times out of 100 rolls. 
C) 25 times on average,over the long term. 
D) All of these choices are true. 
A) on every other roll. 
B) exactly 50 times out of 100 rolls. 
C) 25 times on average,over the long term. 
D) All of these choices are true.

Question 15

If A and B are ____________________ then the probability of the union of A and B is the sum of their individual probabilities.

Accepted Answer

The answer of If A and B are ____________________ then...

Question 16

Mutual Fund Price ​ An investor estimates that there is a 75% chance that a particular mutual fund's price will increase to $100 per share over the next three weeks,based on past data. ​ ​
-{Mutual Fund Price Narrative} Interpret the 75% probability.

Accepted Answer

We interpret the 75% figure to mean that

Question 17

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 and single vehicle?

Accepted Answer

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

Question 18

Bayes' Law allows us to compute conditional probabilities from other forms of probability.

Accepted Answer

A) True 
 B)False

Question 19

Bayes' Law says that P(A|B)= P(B|A)P(A).

Accepted Answer

A) True 
 B)False

Question 20

Equity Loan Rates A survey of banks estimated the following probabilities for the interest rate being charged on a equity loan based on a 30-year loan,based on past records.   ​ ​
-{Equity Loan Rates Narrative} What approach was used in estimating the probabilities for the interest rates?

Accepted Answer

relative f

Exam 6: Probability

If A and B are independent,then P(A|B)= P(A)or P(B|A)= P(B).

Two events A and B are independent if P(A and B)= 0.

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

Prior probability is also called likelihood probability.

The probability of the union of two mutually exclusive events A and B is 0.

There are situations where we witness a particular event and we need to compute the probability of one of its possible causes.____________________ is the technique we use to do this.

There are ____________________ requirements of probabilities for the outcomes of a sample space.

The ____________________ of events A and B is the event that occurs when both A and B occur.

The probability of event A given event B is denoted by

Events A and B are either independent or mutually exclusive.

The probability of an event is the ____________________ of the probabilities of the simple events that constitute the event.

If P(A and B)= 1,then A and B must be mutually exclusive.

If you roll a balanced die 50 times,you should expect an even number to appear:

If A and B are ____________________ then the probability of the union of A and B is the sum of their individual probabilities.

Mutual Fund Price ​ An investor estimates that there is a 75% chance that a particular mutual fund's price will increase to $100 per share over the next three weeks,based on past data. ​ ​ -{Mutual Fund Price Narrative} Interpret the 75% probability.

Bayes' Law allows us to compute conditional probabilities from other forms of probability.

Bayes' Law says that P(A|B)= P(B|A)P(A).

Equity Loan Rates A survey of banks estimated the following probabilities for the interest rate being charged on a equity loan based on a 30-year loan,based on past records. ​ ​ -{Equity Loan Rates Narrative} What approach was used in estimating the probabilities for the interest rates?

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

Mutual Fund Price An investor estimates that there is a 75% chance that a particular mutual fund's price will increase to $100 per share over the next three weeks,based on past data. -{Mutual Fund Price Narrative} Interpret the 75% probability.

Equity Loan Rates A survey of banks estimated the following probabilities for the interest rate being charged on a equity loan based on a 30-year loan,based on past records. -{Equity Loan Rates Narrative} What approach was used in estimating the probabilities for the interest rates?