Question 1

The number of different committees of 2 students that can be chosen from a group of 5 students is

Accepted Answer

A) 20 
B) 2 
C) 5 
D) 10 
E) 1 
A) 20 
B) 2 
C) 5 
D) 10 
E) 1 D

Question 2

Given two events, A and B, if the probability of either A or B occurring is 0.8, then the probability of neither A nor B occurring is -0.8.

Accepted Answer

A) True 
 B)False  False

Question 3

Which of the following is not a legitimate probability value?

Accepted Answer

A) 0.67 
B) 15/16 
C) 0.23 
D) 4/3 
E) 0.98 
A) 0.67 
B) 15/16 
C) 0.23 
D) 4/3 
E) 0.98 D

Question 4

A joint probability is the probability that at least one of two events occur.

Accepted Answer

A) True 
 B)False

Question 5

A recent survey of Financial Post (FP)readers reported that 40% of their subscribers regularly read the Wall Street Journal (WSJ), 32% read Time (T), and 11% read both the WSJ and T.What is the probability that a randomly selected reader reads WSJ or T or both?

Accepted Answer

A) 0.09 
B) 0.11 
C) 0.61 
D) 0.72 
E) 0.87 
A) 0.09 
B) 0.11 
C) 0.61 
D) 0.72 
E) 0.87

Question 6

The union of two events, M and N is denoted by ___.

Accepted Answer

A) (MN) 
B) M $\subset$ N 
C) M $\cap$ N 
D) M $\cup$ N 
E) M $\supset$ N 
A) (MN) 
B) M $\subset$ N 
C) M $\cap$ N 
D) M $\cup$ N 
E) M $\supset$ N

Question 7

Which of the following statements in NOT true?

Accepted Answer

A) the marginal probability uses the total possible outcomes in the denominator 
B) the union probability is the probability of X or Y occurring. 
C) the joint probability uses the probability of X in the denominator 
D) the conditional probability uses subtotal of the possible outcomes in denominator 
A) the marginal probability uses the total possible outcomes in the denominator 
B) the union probability is the probability of X or Y occurring. 
C) the joint probability uses the probability of X in the denominator 
D) the conditional probability uses subtotal of the possible outcomes in denominator

Question 8

The table below provides summary information about the students in a class.The gender of each individual and their age is given.   If a student is randomly selected from this group, what is the probability that the student is male?

Accepted Answer

A) 0.12 
B) 0.48 
C) 0.50 
D) 0.52 
E) 0.68 
A) 0.12 
B) 0.48 
C) 0.50 
D) 0.52 
E) 0.68

Question 9

The probability that a person's favorite color is blue would be an example of a marginal probability.

Accepted Answer

A) True 
 B)False

Question 10

Given that two events, A and B, are independent, if the marginal probability of A is 0.6, the conditional probability of A given B will be 0.4.

Accepted Answer

A) True 
 B)False

Question 11

The table below provides summary information about the 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 12

Assigning probability 1/52 on drawing the ace of spade in a deck of cards is an example of assigning probabilities using the ________________ method

Accepted Answer

A) subjective probability 
B) relative frequency 
C) classical probability 
D) prior probability 
E) posterior probability 
A) subjective probability 
B) relative frequency 
C) classical probability 
D) prior probability 
E) posterior probability

Question 13

A recent survey found that 24% of people in Michigan like oatmeal.If the probability that someone lives in Michigan is 4.8%.What is the probability that you choose two people in the US and they are both from Michigan?

Accepted Answer

A) 28.4% 
B) 24.0% 
C) 0.2% 
D) 100.0% 
E) 48.0% 
A) 28.4% 
B) 24.0% 
C) 0.2% 
D) 100.0% 
E) 48.0%

Question 14

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 15

A recent survey found that 24% of people in Michigan like oatmeal.If the probability that someone lives in Michigan is 4.8% what is the probability that two people from Michigan would both like oatmeal?

Accepted Answer

A) 5.8% 
B) 24.0% 
C) 4.8% 
D) 48.0% 
E) 1.2% 
A) 5.8% 
B) 24.0% 
C) 4.8% 
D) 48.0% 
E) 1.2%

Question 16

Buyers of television sets are offered a choice of one of three different styles.How many different outcomes could result if ten customers make a selection?

Accepted Answer

A) 30 
B) 120 
C) 720 
D) 1000 
E) 59049 
A) 30 
B) 120 
C) 720 
D) 1000 
E) 59049

Question 17

The table below provides summary information about students in a class.The gender of each individual and the major is given.   If a student is randomly selected from this group, what is the probability that the student is a female who majors in accounting?

Accepted Answer

A) 0.18 
B) 0.60 
C) 0.35 
D) 0.40 
E) 0.78 
A) 0.18 
B) 0.60 
C) 0.35 
D) 0.40 
E) 0.78

Question 18

If the CEO of Apple wanted to know the probability that someone would own an Apple computer and spend more than 20 hours each week on the internet would be an example of a _____________ probability.

Accepted Answer

A) unconditional 
B) union 
C) joint 
D) marginal 
E) conditional 
A) unconditional 
B) union 
C) joint 
D) marginal 
E) conditional

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 what is 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

The CEO of Apple wanted to know the probability that someone would own an Apple computer or spend more than 20 hours each week on the internet, this would be an example of a ______________ probability.

Accepted Answer

A) union 
B) unconditional 
C) marginal 
D) conditional 
E) joint 
A) union 
B) unconditional 
C) marginal 
D) conditional 
E) joint

The number of different committees of 2 students that can be chosen from a group of 5 students is

Given two events, A and B, if the probability of either A or B occurring is 0.8, then the probability of neither A nor B occurring is -0.8.

Which of the following is not a legitimate probability value?

A joint probability is the probability that at least one of two events occur.

A recent survey of Financial Post (FP)readers reported that 40% of their subscribers regularly read the Wall Street Journal (WSJ), 32% read Time (T), and 11% read both the WSJ and T.What is the probability that a randomly selected reader reads WSJ or T or both?

The union of two events, M and N is denoted by ___.

Which of the following statements in NOT true?

The table below provides summary information about the students in a class.The gender of each individual and their age is given. If a student is randomly selected from this group, what is the probability that the student is male?

The probability that a person's favorite color is blue would be an example of a marginal probability.

Given that two events, A and B, are independent, if the marginal probability of A is 0.6, the conditional probability of A given B will be 0.4.

The table below provides summary information about the 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?

Assigning probability 1/52 on drawing the ace of spade in a deck of cards is an example of assigning probabilities using the ________________ method

A recent survey found that 24% of people in Michigan like oatmeal.If the probability that someone lives in Michigan is 4.8%.What is the probability that you choose two people in the US and they are both from Michigan?

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

A recent survey found that 24% of people in Michigan like oatmeal.If the probability that someone lives in Michigan is 4.8% what is the probability that two people from Michigan would both like oatmeal?

Buyers of television sets are offered a choice of one of three different styles.How many different outcomes could result if ten customers make a selection?

The table below provides summary information about students in a class.The gender of each individual and the major is given. If a student is randomly selected from this group, what is the probability that the student is a female who majors in accounting?

If the CEO of Apple wanted to know the probability that someone would own an Apple computer and spend more than 20 hours each week on the internet would be an example of a _____________ probability.

The CEO of Apple wanted to know the probability that someone would own an Apple computer or spend more than 20 hours each week on the internet, this would be an example of a ______________ probability.

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

Analysis 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

The number of different committees of 2 students that can be chosen from a group of 5 students is

Given two events, A and B, if the probability of either A or B occurring is 0.8, then the probability of neither A nor B occurring is -0.8.

Which of the following is not a legitimate probability value?

A joint probability is the probability that at least one of two events occur.

A recent survey of Financial Post (FP)readers reported that 40% of their subscribers regularly read the Wall Street Journal (WSJ), 32% read Time (T), and 11% read both the WSJ and T.What is the probability that a randomly selected reader reads WSJ or T or both?

The union of two events, M and N is denoted by ___.

Which of the following statements in NOT true?

The table below provides summary information about the students in a class.The gender of each individual and their age is given. If a student is randomly selected from this group, what is the probability that the student is male?

The probability that a person's favorite color is blue would be an example of a marginal probability.

Given that two events, A and B, are independent, if the marginal probability of A is 0.6, the conditional probability of A given B will be 0.4.

The table below provides summary information about the 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?

Assigning probability 1/52 on drawing the ace of spade in a deck of cards is an example of assigning probabilities using the ________________ method

A recent survey found that 24% of people in Michigan like oatmeal.If the probability that someone lives in Michigan is 4.8%.What is the probability that you choose two people in the US and they are both from Michigan?

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

A recent survey found that 24% of people in Michigan like oatmeal.If the probability that someone lives in Michigan is 4.8% what is the probability that two people from Michigan would both like oatmeal?

Buyers of television sets are offered a choice of one of three different styles.How many different outcomes could result if ten customers make a selection?

The table below provides summary information about students in a class.The gender of each individual and the major is given. If a student is randomly selected from this group, what is the probability that the student is a female who majors in accounting?

If the CEO of Apple wanted to know the probability that someone would own an Apple computer and spend more than 20 hours each week on the internet would be an example of a _____________ probability.

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 what is P(Healthcare ∪\cup∪ Electronics)?

The CEO of Apple wanted to know the probability that someone would own an Apple computer or spend more than 20 hours each week on the internet, this would be an example of a ______________ probability.

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

Analysis 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