Question 1

The probability of observing at least one of two events [for example,p(A or B)] is ____.

Accepted Answer

A) p(A,
B) - p(
A)  
B) p(A,
B) - p(
B)  
C) p(
A) p(
B)  
D) p(
A) + p(
B) - p(A,
B)  
A) p(A,
B) - p(
A)  
B) p(A,
B) - p(
B)  
C) p(
A) p(
B)  
D) p(
A) + p(
B) - p(A,
B)  D

Question 2

Adding probabilities refers to focusing on the likelihood that at least one of two events will occur and involves adding p(A)+ p(B),as long as the two events are mutually exclusive.

Accepted Answer

A) True 
 B)False  True

Question 3

The variance of a binomial distribution is equal to ì.

Accepted Answer

A) True 
 B)False  False

Question 4

The equation,p(A)= (number of observations favoring event A)/ (total number of observations)refers to the probability of a ____________________ event.

Accepted Answer

The answer of The equation,p(A)= (number of observations favoring event...

Question 5

Sampling without replacement involves selecting a case at random and then,without replacing this case,selecting another case at random.

Accepted Answer

A) True 
 B)False

Question 6

What is the relationship between the binomial distribution and the normal distribution?

Accepted Answer

When certain conditions are met,the norm

Question 7

The likelihood of each of two events occurring refers to a ____________________ probability.

Accepted Answer

The answer of The likelihood of each of two events...

Question 8

A permutation of a set of objects or events ____.

Accepted Answer

A) is an ordered sequence 
B) is a sequence in which order doesn't matter 
C) is a random selection of events 
D) has fewer events than a combination 
A) is an ordered sequence 
B) is a sequence in which order doesn't matter 
C) is a random selection of events 
D) has fewer events than a combination

Question 9

The binomial and normal distributions are closely related,with the correspondence between them depending on the values of:

Accepted Answer

A) n and p 
B) a and b 
C) alpha and beta 
D) the mean and standard deviation 
A) n and p 
B) a and b 
C) alpha and beta 
D) the mean and standard deviation

Question 10

Assuming the null hypothesis is true,we can specify an _____ of an investigation.

Accepted Answer

A) expected result 
B) alternative result 
C) improbable result 
D) all of these 
A) expected result 
B) alternative result 
C) improbable result 
D) all of these

Question 11

If the observed result of an investigation is similar enough to the outcome stated in the null hypothesis such that it can reasonably be attributed to chance,we will reject the null hypothesis.

Accepted Answer

A) True 
 B)False

Question 12

When two events are related,this means that one causes the other.

Accepted Answer

A) True 
 B)False

Question 13

A marketing researcher at a computer company did a study examining user satisfaction with two operating systems.A total of 300 users were surveyed on the type of operating system used and their satisfaction with it.Use the following data set to answer questions 6-14:  
Which of the following is an expression of the probability of a simple event?

Accepted Answer

A) The probability that a user is satisfied given use of either system 9 or 10. 
B) The probability that a user is not satisfied with system 9. 
C) The probability that a user is not satisfied with either system 9 or 10. 
D) The probability that people use system 9,but not system 10. 
A) The probability that a user is satisfied given use of either system 9 or 10. 
B) The probability that a user is not satisfied with system 9. 
C) The probability that a user is not satisfied with either system 9 or 10. 
D) The probability that people use system 9,but not system 10.

Question 14

The probability of the likelihood of an event given some other event refers to a ____________________ probability.

Accepted Answer

The answer of The probability of the likelihood of an...

Question 15

A sample of 500 people aged 30 - 40 years old were interviewed to study the relationship between whether a person graduated from college or only high school and whether s/he changed jobs in the last 5 years.The results are found in the contingency table below.  
Answers below have been rounded to two decimal places.
What is the probability that an individual has changed jobs,given that they have graduated from high school only?

Accepted Answer

A) .23 
B) .35 
C) .48 
D) .65 
A) .23 
B) .35 
C) .48 
D) .65

Question 16

A sample of 500 people aged 30 - 40 years old were interviewed to study the relationship between whether a person graduated from college or only high school and whether s/he changed jobs in the last 5 years.The results are found in the contingency table below.  
Answers below have been rounded to two decimal places.
What is the probability that an individual has changed jobs and they have graduated from college?

Accepted Answer

A) .20 
B) .26 
C) .40 
D) .52 
A) .20 
B) .26 
C) .40 
D) .52

Question 17

A new drug developed to fight depression has a .20 probability of causing dizziness.A person takes the drug 100 times.
What is the probability of the person getting dizzy 10 times or fewer?

Accepted Answer

A) .0062 
B) .0124 
C) .2643 
D) .5286 
A) .0062 
B) .0124 
C) .2643 
D) .5286

Question 18

Each unique combination of variables in a contingency table is referred to as a contingent frequency.

Accepted Answer

A) True 
 B)False

Question 19

Researchers in health and advertising are interested in looking at how alternative forms of alcohol advertising are related to actual alcohol use among youth.Imagine you have conducted a study looking at the relationship between owning an item that advertises alcohol (such as a hat,t-shirt or cup with an alcohol logo on it)and having tried alcohol among a group of 12-year-olds.You observe 500 cases total.Of those 500 cases,100 have tried alcohol.For the 100 cases who have tried alcohol,32 own an item that advertises alcohol.You wish to address the following research question: Is the observation that 32 out of 100 youths who have tried alcohol own an advertising item sufficient evidence to say that these two factors are related? Using an alpha level of .05 as the criterion,what should we conclude about the likelihood that trying alcohol and owning an alcohol advertising item are related?

Accepted Answer

Because the probability of obt

Question 20

The likelihood of observing each of two events is referred to as a:

Accepted Answer

A) hypothesis 
B) binomial probability 
C) conditional probability 
D) joint probability 
A) hypothesis 
B) binomial probability 
C) conditional probability 
D) joint probability

The probability of observing at least one of two events [for example,p(A or B)] is ____.

Adding probabilities refers to focusing on the likelihood that at least one of two events will occur and involves adding p(A)+ p(B),as long as the two events are mutually exclusive.

The variance of a binomial distribution is equal to ì.

The equation,p(A)= (number of observations favoring event A)/ (total number of observations)refers to the probability of a ____________________ event.

Sampling without replacement involves selecting a case at random and then,without replacing this case,selecting another case at random.

What is the relationship between the binomial distribution and the normal distribution?

The likelihood of each of two events occurring refers to a ____________________ probability.

A permutation of a set of objects or events ____.

The binomial and normal distributions are closely related,with the correspondence between them depending on the values of:

Assuming the null hypothesis is true,we can specify an _____ of an investigation.

If the observed result of an investigation is similar enough to the outcome stated in the null hypothesis such that it can reasonably be attributed to chance,we will reject the null hypothesis.

When two events are related,this means that one causes the other.

The probability of the likelihood of an event given some other event refers to a ____________________ probability.

A new drug developed to fight depression has a .20 probability of causing dizziness.A person takes the drug 100 times. What is the probability of the person getting dizzy 10 times or fewer?

Each unique combination of variables in a contingency table is referred to as a contingent frequency.

The likelihood of observing each of two events is referred to as a:

Introduction and Mathematical Preliminaries

Frequency and Probability Distributions

Percentiles percentile Ranks standard Scores and the Normal Distribution

Pearson Correlation and Regression: Descriptive Aspects

Measures of Central Tendency and Variability

Estimation and Sampling Distributions

Hypothesis Testing: Inferences About a Single Mean

Principles of Research Design and Statistical Preliminaries for Analyzing Bivariate Relationships

Independent Groups T -Test

Correlated Groups T-Test

One-Way Repeated Measures Analysis of Variance

Pearson Correlation and Regression: Inferential Aspects

Chi-Square Test

Nonparametric Statistics

Two-Way Between-Subjects Analysis of Variance

Overview and Extension: Statistical Tests for More Complex Designs

Filters

Exam 6: Probability

The probability of observing at least one of two events [for example,p(A or B)] is ____.

Adding probabilities refers to focusing on the likelihood that at least one of two events will occur and involves adding p(A)+ p(B),as long as the two events are mutually exclusive.

The variance of a binomial distribution is equal to ì.

The equation,p(A)= (number of observations favoring event A)/ (total number of observations)refers to the probability of a ____________________ event.

Sampling without replacement involves selecting a case at random and then,without replacing this case,selecting another case at random.

What is the relationship between the binomial distribution and the normal distribution?

The likelihood of each of two events occurring refers to a ____________________ probability.

A permutation of a set of objects or events ____.

The binomial and normal distributions are closely related,with the correspondence between them depending on the values of:

Assuming the null hypothesis is true,we can specify an _____ of an investigation.

If the observed result of an investigation is similar enough to the outcome stated in the null hypothesis such that it can reasonably be attributed to chance,we will reject the null hypothesis.

When two events are related,this means that one causes the other.

The probability of the likelihood of an event given some other event refers to a ____________________ probability.

A new drug developed to fight depression has a .20 probability of causing dizziness.A person takes the drug 100 times. What is the probability of the person getting dizzy 10 times or fewer?

Each unique combination of variables in a contingency table is referred to as a contingent frequency.

The likelihood of observing each of two events is referred to as a:

Introduction and Mathematical Preliminaries

Frequency and Probability Distributions

Percentiles percentile Ranks standard Scores and the Normal Distribution

Pearson Correlation and Regression: Descriptive Aspects

Measures of Central Tendency and Variability

Estimation and Sampling Distributions

Hypothesis Testing: Inferences About a Single Mean

Principles of Research Design and Statistical Preliminaries for Analyzing Bivariate Relationships

Independent Groups T -Test

Correlated Groups T-Test

One-Way Repeated Measures Analysis of Variance

Pearson Correlation and Regression: Inferential Aspects

Chi-Square Test

Nonparametric Statistics

Two-Way Between-Subjects Analysis of Variance

Overview and Extension: Statistical Tests for More Complex Designs

Filters