Question 1

An event that cannot be broken down into other events is called a certainty outcome.

Accepted Answer

A) True 
 B)False

Question 2

Abel Alonzo,Director of Human Resources,is exploring employee absenteeism at the Plano Power Plant. Ten percent of all plant employees work in the finishing department; 20% of all plant employees are absent excessively; and 7% of all plant employees work in the finishing department and are absent excessively. A plant employee is selected randomly; F is the event "works in the finishing department;" and A is the event "is absent excessively." P(A|F)= _____________.

Accepted Answer

A)  0.37 
B)  0.70 
C)  0.13 
D)  0.35 
E)  0.80 
A)  0.37 
B)  0.70 
C)  0.13 
D)  0.35 
E)  0.80

Question 3

Which of the following is not a legitimate probability value?

Accepted Answer

A)  0.87 
B)  12/13 
C)  0.05 
D)  5/4 
E)  0.93 
A)  0.87 
B)  12/13 
C)  0.05 
D)  5/4 
E)  0.93

Question 4

Meagan Dubean manages a portfolio of 200 common stocks. Her staff classified the portfolio stocks by 'industry sector' and 'investment objective.'   If a stock is selected randomly from Meagan's portfolio,P (Growth)= _______.

Accepted Answer

A)  0.50 
B)  0.83 
C)  0.67 
D)  0.75 
E)  0.90 
A)  0.50 
B)  0.83 
C)  0.67 
D)  0.75 
E)  0.90

Question 5

Given two events A and B each with a non-zero probability,if the conditional probability of A given B is zero,it implies that the events A and B are independent.

Accepted Answer

A) True 
 B)False

Question 6

Meagan Dubean manages a portfolio of 200 common stocks. Her staff classified the portfolio stocks by 'industry sector' and 'investment objective.'   Which of the following statements is not true?

Accepted Answer

A)  Growth and Income are complementary events. 
B)  Electronics and Growth are dependent. 
C)  Electronics and Healthcare are mutually exclusive. 
D)  Airlines and Healthcare are collectively exhaustive. 
E)  Growth and Income are collectively exhaustive. 
A)  Growth and Income are complementary events. 
B)  Electronics and Growth are dependent. 
C)  Electronics and Healthcare are mutually exclusive. 
D)  Airlines and Healthcare are collectively exhaustive. 
E)  Growth and Income are collectively exhaustive.

Question 7

Given two events A and B each with a non-zero probability,if the conditional probability of A given B is zero,it implies that the events A and B are mutually exclusive.

Accepted Answer

A) True 
 B)False

Question 8

The department in which you work in your company has 24 employees: 10 women and 14 men.A team of 4 employees must be selected to represent the department at a companywide meeting in the headquarters of the company.The team must have two women and two men.How many different teams of 4 can be selected?

Accepted Answer

A)  12 
B)  35 
C)  136 
D)  2024 
E)  4095 
A)  12 
B)  35 
C)  136 
D)  2024 
E)  4095

Question 9

A market research firm is investigating the appeal of three package designs. The table below gives information obtained through a sample of 200 consumers. The three package designs are labeled A,B,and C. The consumers are classified according to age and package design preference.   If one of these consumers is randomly selected and prefers design B,what is the probability that the person is 25 or older?

Accepted Answer

A)  0.28 
B)  0.14 
C)  0.45 
D)  0.27 
E)  0.78 
A)  0.28 
B)  0.14 
C)  0.45 
D)  0.27 
E)  0.78

Question 10

The list of all elementary events for an experiment is called the sample space.

Accepted Answer

A) True 
 B)False

Question 11

In a set of 25 aluminum castings,four castings are defective (D),and the remaining twenty-one are good (G). A quality control inspector randomly selects three of the twenty-five castings without replacement,and classifies each as defective (D)or good (G). The sample space for this experiment contains ____________ elementary events.

Accepted Answer

A)  12,650 
B)  2,300 
C)  455 
D)  16 
E)  15,6255 
A)  12,650 
B)  2,300 
C)  455 
D)  16 
E)  15,6255

Question 12

An automobile dealer wishes to investigate the relation between the gender of the buyer and type of vehicle purchased.Based on the following joint probability table that was developed from the dealer's records for the previous year,P (SUV)= ___________.

Accepted Answer

A)  0.30 
B)  0.40 
C)  0.12 
D)  0.10 
E)  0.60 
A)  0.30 
B)  0.40 
C)  0.12 
D)  0.10 
E)  0.60

Question 13

Meagan Dubean manages a portfolio of 200 common stocks. Her staff classified the portfolio stocks by 'industry sector' and 'investment objective.'   If a stock is selected randomly from Meagan's portfolio,P (Airlines|Income)= _______.

Accepted Answer

A)  0.10 
B)  0.40 
C)  0.25 
D)  0.67 
E)  0.90 
A)  0.10 
B)  0.40 
C)  0.25 
D)  0.67 
E)  0.90

Question 14

An automobile dealer wishes to investigate the relation between the gender of the buyer and type of vehicle purchased.Based on the following joint probability table that was developed from the dealer's records for the previous year,P (Female)= __________.

Accepted Answer

A)  0.30 
B)  0.40 
C)  0.12 
D)  0.10 
E)  0.60 
A)  0.30 
B)  0.40 
C)  0.12 
D)  0.10 
E)  0.60

Question 15

Inferring the value of a population parameter from the statistic on a random sample drawn from the population is an inferential process under uncertainty.

Accepted Answer

A) True 
 B)False

Question 16

Bayes' rule is an extension of the law of conditional probabilities to allow revision of original probabilities with new information.

Accepted Answer

A) True 
 B)False

Question 17

Abel Alonzo,Director of Human Resources,is exploring employee absenteeism at the Plano Power Plant. Ten percent of all plant employees work in the finishing department; 20% of all plant employees are absent excessively; and 7% of all plant employees work in the finishing department and are absent excessively. A plant employee is selected randomly; F is the event "works in the finishing department;" and A is the event "is absent excessively." P(F|A)= _____________.

Accepted Answer

A)  0.35 
B)  0.70 
C)  0.13 
D)  0.37 
E)  0.10 
A)  0.35 
B)  0.70 
C)  0.13 
D)  0.37 
E)  0.10

Question 18

The table below provides summary information about students in a class.The sex of each individual and their age is given.   A student is randomly selected from this group,and it is found that the student is older than 25 years.What is the probability that the student is a male?

Accepted Answer

A)  0.21 
B)  0.10 
C)  0.50 
D)  0.54 
E)  0.26 
A)  0.21 
B)  0.10 
C)  0.50 
D)  0.54 
E)  0.26

Question 19

Meagan Dubean manages a portfolio of 200 common stocks. Her staff classified the portfolio stocks by 'industry sector' and 'investment objective.'  
 If a stock is selected randomly from Meagan's portfolio,P (Healthcare $\cup$ Electronics)= _______.

Accepted Answer

A)  0.25 
B)  0.85 
C)  0.60 
D)  0.75 
E)  0.90 
A)  0.25 
B)  0.85 
C)  0.60 
D)  0.75 
E)  0.90

Question 20

Given P (A)= 0.45,P (B)= 0.30,P (A $\cap$ B)= 0.05. Find P (B|A).

Accepted Answer

A)  0.45 
B)  0.135 
C)  0.30 
D)  0.111 
E)  0.167 
A)  0.45 
B)  0.135 
C)  0.30 
D)  0.111 
E)  0.167

An event that cannot be broken down into other events is called a certainty outcome.

Which of the following is not a legitimate probability value?

Meagan Dubean manages a portfolio of 200 common stocks. Her staff classified the portfolio stocks by 'industry sector' and 'investment objective.' If a stock is selected randomly from Meagan's portfolio,P (Growth)= _______.

Given two events A and B each with a non-zero probability,if the conditional probability of A given B is zero,it implies that the events A and B are independent.

Meagan Dubean manages a portfolio of 200 common stocks. Her staff classified the portfolio stocks by 'industry sector' and 'investment objective.' Which of the following statements is not true?

Given two events A and B each with a non-zero probability,if the conditional probability of A given B is zero,it implies that the events A and B are mutually exclusive.

The list of all elementary events for an experiment is called the sample space.

An automobile dealer wishes to investigate the relation between the gender of the buyer and type of vehicle purchased.Based on the following joint probability table that was developed from the dealer's records for the previous year,P (SUV)= ___________.

Meagan Dubean manages a portfolio of 200 common stocks. Her staff classified the portfolio stocks by 'industry sector' and 'investment objective.' If a stock is selected randomly from Meagan's portfolio,P (Airlines|Income)= _______.

An automobile dealer wishes to investigate the relation between the gender of the buyer and type of vehicle purchased.Based on the following joint probability table that was developed from the dealer's records for the previous year,P (Female)= __________.

Inferring the value of a population parameter from the statistic on a random sample drawn from the population is an inferential process under uncertainty.

Bayes' rule is an extension of the law of conditional probabilities to allow revision of original probabilities with new information.

The table below provides summary information about students in a class.The sex of each individual and their age is given. A student is randomly selected from this group,and it is found that the student is older than 25 years.What is the probability that the student is a male?

Given P (A)= 0.45,P (B)= 0.30,P (A $\cap$ B)= 0.05. Find P (B|A).

Introduction to Statistics

Charts and Graphs

Descriptive Statistics

Discrete Distributions

Continuous Distributions

Sampling and Sampling Distributions

Statistical Inference: Estimation for Single Populations

Statistical Inference: Hypothesis Testing for Single Populations

Statistical Inferences About Two Populations

A Nalysis of Variance and Design of Experiments

Simple Regression Analysis and Correlation

Multiple Regression Analysis

Building Multiple Regression Models

Time-Series Forecasting and Index Numbers

Analysis of Categorical Data

Nonparametric Statistics

Statistical Quality Control

Decision Analysis

Filters

Exam 4: Probability

An event that cannot be broken down into other events is called a certainty outcome.

Which of the following is not a legitimate probability value?

Meagan Dubean manages a portfolio of 200 common stocks. Her staff classified the portfolio stocks by 'industry sector' and 'investment objective.' If a stock is selected randomly from Meagan's portfolio,P (Growth)= _______.

Given two events A and B each with a non-zero probability,if the conditional probability of A given B is zero,it implies that the events A and B are independent.

Meagan Dubean manages a portfolio of 200 common stocks. Her staff classified the portfolio stocks by 'industry sector' and 'investment objective.' Which of the following statements is not true?

Given two events A and B each with a non-zero probability,if the conditional probability of A given B is zero,it implies that the events A and B are mutually exclusive.

The list of all elementary events for an experiment is called the sample space.

An automobile dealer wishes to investigate the relation between the gender of the buyer and type of vehicle purchased.Based on the following joint probability table that was developed from the dealer's records for the previous year,P (SUV)= ___________.

Meagan Dubean manages a portfolio of 200 common stocks. Her staff classified the portfolio stocks by 'industry sector' and 'investment objective.' If a stock is selected randomly from Meagan's portfolio,P (Airlines|Income)= _______.

An automobile dealer wishes to investigate the relation between the gender of the buyer and type of vehicle purchased.Based on the following joint probability table that was developed from the dealer's records for the previous year,P (Female)= __________.

Inferring the value of a population parameter from the statistic on a random sample drawn from the population is an inferential process under uncertainty.

Bayes' rule is an extension of the law of conditional probabilities to allow revision of original probabilities with new information.

The table below provides summary information about students in a class.The sex of each individual and their age is given. A student is randomly selected from this group,and it is found that the student is older than 25 years.What is the probability that the student is a male?

Meagan Dubean manages a portfolio of 200 common stocks. Her staff classified the portfolio stocks by 'industry sector' and 'investment objective.' If a stock is selected randomly from Meagan's portfolio,P (Healthcare ∪\cup∪ Electronics)= _______.

Given P (A)= 0.45,P (B)= 0.30,P (A ∩\cap∩ B)= 0.05. Find P (B|A).

Introduction to Statistics

Charts and Graphs

Descriptive Statistics

Discrete Distributions

Continuous Distributions

Sampling and Sampling Distributions

Statistical Inference: Estimation for Single Populations

Statistical Inference: Hypothesis Testing for Single Populations

Statistical Inferences About Two Populations

A Nalysis of Variance and Design of Experiments

Simple Regression Analysis and Correlation

Multiple Regression Analysis

Building Multiple Regression Models

Time-Series Forecasting and Index Numbers

Analysis of Categorical Data

Nonparametric Statistics

Statistical Quality Control

Decision Analysis

Filters

Given P (A)= 0.45,P (B)= 0.30,P (A $\cap$ B)= 0.05. Find P (B|A).