Question 1

A lot contains 12 items, and 4 are defective. If three items are drawn at random from the lot, what is the probability they are not defective?

Accepted Answer

A)  0.3333 
B)  0.2545 
C)  0.5000 
D)  0.2963 
E)  0.0370 
A)  0.3333 
B)  0.2545 
C)  0.5000 
D)  0.2963 
E)  0.0370

Question 2

Two mutually exclusive events having positive probabilities are ________ dependent.

Accepted Answer

A)  always 
B)  sometimes 
C)  never 
A)  always 
B)  sometimes 
C)  never

Question 3

The ________ of an event is a number that measures the likelihood that an event will occur when an experiment is carried out.

Accepted Answer

A)  outcome 
B)  probability 
C)  intersection 
D)  observation 
A)  outcome 
B)  probability 
C)  intersection 
D)  observation

Question 4

New car owners were asked to evaluate their experiences in buying a new car during the past 12 months. In the survey, the owners indicated they were most satisfied with their experiences at the following three dealers (in no particular order): Subaru, Honda, and Buick. Assuming that each set of rankings is equally likely, what is the probability that owners ranked Subaru first?

Accepted Answer

A)  1/3 
B)  1/6 
C)  1/2 
D)  5/6 
E)  6/6 
A)  1/3 
B)  1/6 
C)  1/2 
D)  5/6 
E)  6/6

Question 5

It is very common for a television series to draw a large audience for special events or for cliff-hanging story lines. Suppose that on one of these occasions, the special show drew viewers from 38.2 percent of all US TV households. Suppose that three TV households are randomly selected. What is the probability that none of the three households viewed this special show?

Accepted Answer

A)  0.236 
B)  0.056 
C)  0.618 
D)  0.382 
E)  0.127 
A)  0.236 
B)  0.056 
C)  0.618 
D)  0.382 
E)  0.127

Question 6

Employees of a local university have been classified according to gender and job type.   Are gender and type of job statistically independent?

Accepted Answer

A)  Yes 
B)  No 
A)  Yes 
B)  No

Question 7

Mutually exclusive events have a nonempty intersection.

Accepted Answer

A) True 
 B)False

Question 8

If events A and B are independent, then P(A|B) is equal to ________.

Accepted Answer

A)  P(
B)  
B)  P(A∩
B)  
C)  P(
A)  
D)  P(AU
B)  
A)  P(
B)  
B)  P(A∩
B)  
C)  P(
A)  
D)  P(AU
B)

Question 9

Given the standard deck of cards, what is the probability of drawing a red card, given that it is a face card?

Accepted Answer

A)  0.500 
B)  0.115 
C)  0.231 
D)  0.077 
E)  0.308 
A)  0.500 
B)  0.115 
C)  0.231 
D)  0.077 
E)  0.308

Question 10

When the probability of one event is not influenced by whether or not another event occurs, the events are said to be ________.

Accepted Answer

A)  independent 
B)  dependent 
C)  mutually exclusive 
D)  experimental 
A)  independent 
B)  dependent 
C)  mutually exclusive 
D)  experimental

Question 11

At a college, 70 percent of the students are women, and 50 percent of the students receive a grade of C. 25 percent of the students are neither female nor C students. Use this contingency table.   What is the probability that a student is male and not a C student?

Accepted Answer

A)  .45 
B)  .50 
C)  .70 
D)  .25 
E)  .05 
A)  .45 
B)  .50 
C)  .70 
D)  .25 
E)  .05

Question 12

The method of assigning probabilities when all outcomes are equally likely to occur is called the classical method.

Accepted Answer

A) True 
 B)False

Question 13

A coin is tossed 6 times. What is the probability that at least one head occurs?

Accepted Answer

A)  63/64 
B)  1/64 
C)  1/36 
D)  5/6 
E)  1/2 
A)  63/64 
B)  1/64 
C)  1/36 
D)  5/6 
E)  1/2

Question 14

Joe is considering pursuing an MBA degree. He has applied to two different universities. The acceptance rate for applicants with similar qualifications is 25 percent for University A and 40 percent for University B. What is the probability that Joe will be accepted at both universities?

Accepted Answer

A)  0.10 
B)  0.25 
C)  0.65 
D)  0.625 
E)  0.40 
A)  0.10 
B)  0.25 
C)  0.65 
D)  0.625 
E)  0.40

Question 15

New car owners were asked to evaluate their experiences in buying a new car during the past 12 months. In the survey, the owners indicated they were most satisfied with their experiences at the following three dealers (in no particular order): Subaru, Honda, and Buick. Assuming that each set of rankings is equally likely, what is the probability that owners ranked Subaru third?

Accepted Answer

A)  1/3 
B)  1/6 
C)  1/2 
D)  5/6 
E)  6/6 
A)  1/3 
B)  1/6 
C)  1/2 
D)  5/6 
E)  6/6

Question 16

A process of observation that has an uncertain outcome is referred to as a(n) ________.

Accepted Answer

A)  probability 
B)  frequency 
C)  conditional probability 
D)  experiment 
A)  probability 
B)  frequency 
C)  conditional probability 
D)  experiment

Question 17

If events A and B are independent, then P(A|B) is always equal to zero.

Accepted Answer

A) True 
 B)False

Question 18

A ________ is the probability that one event will occur given that we know that another event already has occurred.

Accepted Answer

A)  sample space outcome 
B)  subjective probability 
C)  complement of events 
D)  long-run relative frequency 
E)  conditional probability 
A)  sample space outcome 
B)  subjective probability 
C)  complement of events 
D)  long-run relative frequency 
E)  conditional probability

Question 19

What is the probability that a king appears in drawing a single card from a deck of 52 cards?

Accepted Answer

A)  4/13 
B)  1/13 
C)  1/52 
D)  1/12 
E)  2/13 
A)  4/13 
B)  1/13 
C)  1/52 
D)  1/12 
E)  2/13

Question 20

Determine whether these two events are mutually exclusive: unmarried person and a person with an employed spouse.

Accepted Answer

A)  mutually exclusive 
B)  not mutually exclusive 
A)  mutually exclusive 
B)  not mutually exclusive

A lot contains 12 items, and 4 are defective. If three items are drawn at random from the lot, what is the probability they are not defective?

Two mutually exclusive events having positive probabilities are ________ dependent.

The ________ of an event is a number that measures the likelihood that an event will occur when an experiment is carried out.

Employees of a local university have been classified according to gender and job type. Are gender and type of job statistically independent?

Mutually exclusive events have a nonempty intersection.

If events A and B are independent, then P(A|B) is equal to ________.

Given the standard deck of cards, what is the probability of drawing a red card, given that it is a face card?

When the probability of one event is not influenced by whether or not another event occurs, the events are said to be ________.

At a college, 70 percent of the students are women, and 50 percent of the students receive a grade of C. 25 percent of the students are neither female nor C students. Use this contingency table. What is the probability that a student is male and not a C student?

The method of assigning probabilities when all outcomes are equally likely to occur is called the classical method.

A coin is tossed 6 times. What is the probability that at least one head occurs?

Joe is considering pursuing an MBA degree. He has applied to two different universities. The acceptance rate for applicants with similar qualifications is 25 percent for University A and 40 percent for University B. What is the probability that Joe will be accepted at both universities?

A process of observation that has an uncertain outcome is referred to as a(n) ________.

If events A and B are independent, then P(A|B) is always equal to zero.

A ________ is the probability that one event will occur given that we know that another event already has occurred.

What is the probability that a king appears in drawing a single card from a deck of 52 cards?

Determine whether these two events are mutually exclusive: unmarried person and a person with an employed spouse.

An Introduction to Business Statistics and Analytics

Descriptive Statistics and Analytics: Tabular and Graphical Methods

Descriptive Statistics and Analytics: Numerical Methods

Predictive Analytics I: Trees, K-Nearest Neighbors, Naive Bayes,

Discrete Random Variables

Continuous Random Variables

Sampling Distributions

Confidence Intervals

Hypothesis Testing

Statistical Inferences Based on Two Samples

Experimental Design and Analysis of Variance

Chi-Square Tests

Simple Linear Regression Analysis

Multiple Regression and Model Building

Predictive Analytics Ii: Logistic Regression, Discriminate Analysis,

Time Series Forecasting and Index Numbers

Nonparametric Methods

Decision Theory

Filters

Exam 4: Probability and Probability Models

A lot contains 12 items, and 4 are defective. If three items are drawn at random from the lot, what is the probability they are not defective?

Two mutually exclusive events having positive probabilities are ________ dependent.

The ________ of an event is a number that measures the likelihood that an event will occur when an experiment is carried out.

Employees of a local university have been classified according to gender and job type. Are gender and type of job statistically independent?

Mutually exclusive events have a nonempty intersection.

If events A and B are independent, then P(A|B) is equal to ________.

Given the standard deck of cards, what is the probability of drawing a red card, given that it is a face card?

When the probability of one event is not influenced by whether or not another event occurs, the events are said to be ________.

At a college, 70 percent of the students are women, and 50 percent of the students receive a grade of C. 25 percent of the students are neither female nor C students. Use this contingency table. What is the probability that a student is male and not a C student?

The method of assigning probabilities when all outcomes are equally likely to occur is called the classical method.

A coin is tossed 6 times. What is the probability that at least one head occurs?

Joe is considering pursuing an MBA degree. He has applied to two different universities. The acceptance rate for applicants with similar qualifications is 25 percent for University A and 40 percent for University B. What is the probability that Joe will be accepted at both universities?

A process of observation that has an uncertain outcome is referred to as a(n) ________.

If events A and B are independent, then P(A|B) is always equal to zero.

A ________ is the probability that one event will occur given that we know that another event already has occurred.

What is the probability that a king appears in drawing a single card from a deck of 52 cards?

Determine whether these two events are mutually exclusive: unmarried person and a person with an employed spouse.

An Introduction to Business Statistics and Analytics

Descriptive Statistics and Analytics: Tabular and Graphical Methods

Descriptive Statistics and Analytics: Numerical Methods

Predictive Analytics I: Trees, K-Nearest Neighbors, Naive Bayes,

Discrete Random Variables

Continuous Random Variables

Sampling Distributions

Confidence Intervals

Hypothesis Testing

Statistical Inferences Based on Two Samples

Experimental Design and Analysis of Variance

Chi-Square Tests

Simple Linear Regression Analysis

Multiple Regression and Model Building

Predictive Analytics Ii: Logistic Regression, Discriminate Analysis,

Time Series Forecasting and Index Numbers

Nonparametric Methods

Decision Theory

Filters