Question 1

What does it mean to say that two outcomes are mutually exclusive?

Accepted Answer

Two outcomes are said to be mutually exc

Question 2

The outcome of a trial according to probability theory is a(n)_____.

Accepted Answer

A) conditional probability 
B) marginal frequency 
C) event 
D) joint probability 
A) conditional probability 
B) marginal frequency 
C) event 
D) joint probability

Question 3

What does it mean to say that two events are independent?

Accepted Answer

An event A is said to be independent of

Question 4

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 graduated from college?

Accepted Answer

A) .36 
B) .49 
C) .51 
D) .64 
A) .36 
B) .49 
C) .51 
D) .64

Question 5

A researcher wanted to compare eye color distributions of babies born with a birth defect with babies who did not have the birth defect.26 babies with the defect were matched on gender,race,and age with 52 babies without the defect.The frequency of different eye colors as a function of the presence or absence of the defects was as follows:
Eye Color
Group Dark Medium Light
Defect 1 6 19
No Defect 15 13 24
What is the probability that a baby has dark eyes given that the baby has the birth defect?

Accepted Answer

A) .04 
B) .06 
C) .01 
D) .61 
A) .04 
B) .06 
C) .01 
D) .61

Question 6

Imagine you have five questionnaires you want to hand out to a group of people.What is the counting rule used to determine how many sets of five you have when ordering of the questionnaires does not matter?

Accepted Answer

A) permutations 
B) ordered sequencing 
C) combinations 
D) counting 
A) permutations 
B) ordered sequencing 
C) combinations 
D) counting

Question 7

The correspondence between the binomial and normal distributions improves as n increases and as p becomes closer to .50.

Accepted Answer

A) True 
 B)False

Question 8

A _____ indicates the likelihood that an event will occur given that some other event occurs.

Accepted Answer

A) probability distribution 
B) conditional probability 
C) marginal probability 
D) mutually exclusive probability 
A) probability distribution 
B) conditional probability 
C) marginal probability 
D) mutually exclusive probability

Question 9

When selecting cases,putting each selected case back into the population before selecting another one refers to ____________________.

Accepted Answer

sampling w

Question 10

If one was testing the effectiveness of a therapy technique,the alternative hypothesis states that there is NO change due to the technique.

Accepted Answer

A) True 
 B)False

Question 11

In the context of probability theory,there is no difference between sampling with replacement and sampling without replacement.

Accepted Answer

A) True 
 B)False

Question 12

The probability of drawing a red card from a deck of normal playing cards is .5 (half red,half black).A magician draws 12 cards from the deck.What is the probability that the magician draws 8 red cards?

Accepted Answer

A) .0002 
B) .042 
C) .121 
D) .696 
A) .0002 
B) .042 
C) .121 
D) .696

Question 13

Assume a researcher has grouped people into categories by age,as follows: 20-29,30-39,40-49,50-59.A person can only be placed into one of these categories,thus these categories are said to be

Accepted Answer

A) exhaustive 
B) permutations 
C) joint probabilities 
D) mutually exclusive 
A) exhaustive 
B) permutations 
C) joint probabilities 
D) mutually exclusive

Question 14

Assume that you wanted to test the effectiveness of a certain therapy technique in reducing depression among clients.According to statistical hypothesis testing the hypothesis that the technique's effectiveness will be equal to chance is called the _____.

Accepted Answer

A) null hypothesis 
B) alternative hypothesis 
C) binomial hypothesis 
D) alpha hypothesis 
A) null hypothesis 
B) alternative hypothesis 
C) binomial hypothesis 
D) alpha hypothesis

Question 15

The ____________________ is the statistical hypothesis that states that any differences observed are merely due to chance.

Accepted Answer

The answer of The ____________________ is the statistical hypothesis that...

Question 16

A set of objects that are arranged such that the internal order is irrelevant is called a ____.

Accepted Answer

A) combination 
B) binomial root 
C) permutation 
D) simple event 
A) combination 
B) binomial root 
C) permutation 
D) simple event

Question 17

A(n)_____ of a set of objects or events is an ordered sequence.

Accepted Answer

A) enumeration 
B) combination 
C) permutation 
D) manipulation 
A) enumeration 
B) combination 
C) permutation 
D) manipulation

Question 18

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:  
What is the probability that a person uses system 9?

Accepted Answer

A) .813 
B) .187 
C) .740 
D) .260 
A) .813 
B) .187 
C) .740 
D) .260

Question 19

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:  
What is the probability that a user is satisfied with either system 9 or system 10?

Accepted Answer

A) .813 
B) .187 
C) .740 
D) .260 
A) .813 
B) .187 
C) .740 
D) .260

Question 20

In general notation,the probability of observing at least one of event A and event B is:

Accepted Answer

A) .50 
B) p(A or 
B) = p(
A) + p(
B)  
C) p(A or 
B) = p(
A) + p(
B) + p(A,
B)  
D) p(A or 
B) = p(
A) + p(
B) - p(A,
B)  
A) .50 
B) p(A or 
B) = p(
A) + p(
B)  
C) p(A or 
B) = p(
A) + p(
B) + p(A,
B)  
D) p(A or 
B) = p(
A) + p(
B) - p(A,
B)

What does it mean to say that two outcomes are mutually exclusive?

The outcome of a trial according to probability theory is a(n)_____.

What does it mean to say that two events are independent?

Imagine you have five questionnaires you want to hand out to a group of people.What is the counting rule used to determine how many sets of five you have when ordering of the questionnaires does not matter?

The correspondence between the binomial and normal distributions improves as n increases and as p becomes closer to .50.

A _____ indicates the likelihood that an event will occur given that some other event occurs.

When selecting cases,putting each selected case back into the population before selecting another one refers to ____________________.

If one was testing the effectiveness of a therapy technique,the alternative hypothesis states that there is NO change due to the technique.

In the context of probability theory,there is no difference between sampling with replacement and sampling without replacement.

The probability of drawing a red card from a deck of normal playing cards is .5 (half red,half black).A magician draws 12 cards from the deck.What is the probability that the magician draws 8 red cards?

Assume a researcher has grouped people into categories by age,as follows: 20-29,30-39,40-49,50-59.A person can only be placed into one of these categories,thus these categories are said to be

Assume that you wanted to test the effectiveness of a certain therapy technique in reducing depression among clients.According to statistical hypothesis testing the hypothesis that the technique's effectiveness will be equal to chance is called the _____.

The ____________________ is the statistical hypothesis that states that any differences observed are merely due to chance.

A set of objects that are arranged such that the internal order is irrelevant is called a ____.

A(n)_____ of a set of objects or events is an ordered sequence.

In general notation,the probability of observing at least one of event A and event B is:

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

What does it mean to say that two outcomes are mutually exclusive?

The outcome of a trial according to probability theory is a(n)_____.

What does it mean to say that two events are independent?

Imagine you have five questionnaires you want to hand out to a group of people.What is the counting rule used to determine how many sets of five you have when ordering of the questionnaires does not matter?

The correspondence between the binomial and normal distributions improves as n increases and as p becomes closer to .50.

A _____ indicates the likelihood that an event will occur given that some other event occurs.

When selecting cases,putting each selected case back into the population before selecting another one refers to ____________________.

If one was testing the effectiveness of a therapy technique,the alternative hypothesis states that there is NO change due to the technique.

In the context of probability theory,there is no difference between sampling with replacement and sampling without replacement.

The probability of drawing a red card from a deck of normal playing cards is .5 (half red,half black).A magician draws 12 cards from the deck.What is the probability that the magician draws 8 red cards?

Assume a researcher has grouped people into categories by age,as follows: 20-29,30-39,40-49,50-59.A person can only be placed into one of these categories,thus these categories are said to be

Assume that you wanted to test the effectiveness of a certain therapy technique in reducing depression among clients.According to statistical hypothesis testing the hypothesis that the technique's effectiveness will be equal to chance is called the _____.

The ____________________ is the statistical hypothesis that states that any differences observed are merely due to chance.

A set of objects that are arranged such that the internal order is irrelevant is called a ____.

A(n)_____ of a set of objects or events is an ordered sequence.

In general notation,the probability of observing at least one of event A and event B is:

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