Question 1

If A and B are independent events with P(A) = 0.05 and P(B) = 0.65, then P(A ∩ B) =

Accepted Answer

A)  0.05. 
B)  0.0325. 
C)  0.65. 
D)  0.8. 
A)  0.05. 
B)  0.0325. 
C)  0.65. 
D)  0.8.

Question 2

Each individual outcome of an experiment is called

Accepted Answer

A)  the sample space. 
B)  a sample point. 
C)  a trial. 
D)  an event. 
A)  the sample space. 
B)  a sample point. 
C)  a trial. 
D)  an event.

Question 3

If A and B are mutually exclusive, then​

Accepted Answer

A)  ​P(
A)  + P(
B)  = 0. 
B)  ​P(
A)  + P(
B)  = 1. 
C)  ​P(A ∩ 
B)  = 0. 
D)  ​P(A ∩ 
B)  = 1. 
A)  ​P(
A)  + P(
B)  = 0. 
B)  ​P(
A)  + P(
B)  = 1. 
C)  ​P(A ∩ 
B)  = 0. 
D)  ​P(A ∩ 
B)  = 1.

Question 4

Assuming that each of the 52 cards in an ordinary deck has a probability of 1/52 of being drawn, what is the probability of drawing a black card?

Accepted Answer

A)  1/52 
B)  4/52 
C)  13/52 
D)  26/52 
A)  1/52 
B)  4/52 
C)  13/52 
D)  26/52

Question 5

The symbol ∩ shows the

Accepted Answer

A)  union of events. 
B)  intersection of two events. 
C)  sum of the probabilities of events. 
D)  sample space. 
A)  union of events. 
B)  intersection of two events. 
C)  sum of the probabilities of events. 
D)  sample space.

Question 6

If two events are independent, then

Accepted Answer

A)  they must be mutually exclusive. 
B)  the sum of their probabilities must be equal to one. 
C)  their intersection must be zero. 
D)  the product of their probabilities gives their intersection. 
A)  they must be mutually exclusive. 
B)  the sum of their probabilities must be equal to one. 
C)  their intersection must be zero. 
D)  the product of their probabilities gives their intersection.

Question 7

If a six sided die is tossed two times and "3" shows up both times, the probability of "3" on the third trial is

Accepted Answer

A)  much larger than any other outcome. 
B)  much smaller than any other outcome. 
C)  the same as any other outcome. 
D)  not able to be determined before the die is tossed. 
A)  much larger than any other outcome. 
B)  much smaller than any other outcome. 
C)  the same as any other outcome. 
D)  not able to be determined before the die is tossed.

Question 8

Each customer entering a department store will either buy or not buy some merchandise.An experiment consists of following 5 customers and determining whether or not they purchase any merchandise.The number of sample points in this experiment is

Accepted Answer

A)  5. 
B)  10. 
C)  25. 
D)  64. 
A)  5. 
B)  10. 
C)  25. 
D)  64.

Question 9

If X and Y are mutually exclusive events with P(A) = 0.295, P(B) = 0.32, then P(A | B) =

Accepted Answer

A)  0.0944. 
B)  0.6150. 
C)  1.0000. 
D)  0.0000. 
A)  0.0944. 
B)  0.6150. 
C)  1.0000. 
D)  0.0000.

Question 10

If P(A) = 0.45, P(B) = 0.55, and P(A ∪ B) = 0.78, then P(A | B) =

Accepted Answer

A)  0.00 
B)  0.45 
C)  0.22 
D)  0.40 
A)  0.00 
B)  0.45 
C)  0.22 
D)  0.40

Question 11

A method of assigning probabilities which assumes that the experimental outcomes are equally likely is referred to as the _____ method.

Accepted Answer

A)  objective 
B)  classical 
C)  subjective 
D)  experimental 
A)  objective 
B)  classical 
C)  subjective 
D)  experimental

Question 12

From nine cards numbered 1 through 9, two cards are drawn.Consider the selection and classification of the cards as odd or even as an experiment.How many sample points are there for this experiment?

Accepted Answer

A)  2 
B)  3 
C)  4 
D)  9 
A)  2 
B)  3 
C)  4 
D)  9

Question 13

Twelve individuals are candidates for positions of president and vice president of an organization.How many possibilities of selections exist?

Accepted Answer

The answer of Twelve individuals are candidates for positions of...

Question 14

Any process that generates well-defined outcomes is a(n)

Accepted Answer

A)  event. 
B)  experiment. 
C)  sample point. 
D)  sample space. 
A)  event. 
B)  experiment. 
C)  sample point. 
D)  sample space.

Question 15

If P(A) = 0.7, P(B) = 0.6, P(A ∩ B) = 0, then events A and B are

Accepted Answer

A)  supplementary events. 
B)  mutually exclusive. 
C)  independent events. 
D)  complements of each other. 
A)  supplementary events. 
B)  mutually exclusive. 
C)  independent events. 
D)  complements of each other.

Question 16

A six-sided die is tossed 4times.The probability of observing four ones in a row is

Accepted Answer

A)  4/6. 
B)  1/6. 
C)  1/4096. 
D)  1/1296. 
A)  4/6. 
B)  1/6. 
C)  1/4096. 
D)  1/1296.

Question 17

If A and B are independent events with P(A) = .1 and P(B) = .4, then

Accepted Answer

A)  P(A ) 
B)  = 0. 
B)  P(A ) 
B)  = .04. 
C)  P(A * 
B)  = .5. 
D)  P(A ? 
B)  = .25. 
A)  P(A ) 
B)  = 0. 
B)  P(A ) 
B)  = .04. 
C)  P(A * 
B)  = .5. 
D)  P(A ? 
B)  = .25.

Question 18

In the set of all past due accounts, let the event A mean the account is between 31 and 60 days past due and the event B mean the account is that of a new customer.The union of A and B is all

Accepted Answer

A)  new customers. 
B)  accounts fewer than 31 or more than 60 days past due. 
C)  accounts from new customers and all accounts that are from 31 to 60 days past due. 
D)  new customers whose accounts are between 31 and 60 days past due. 
A)  new customers. 
B)  accounts fewer than 31 or more than 60 days past due. 
C)  accounts from new customers and all accounts that are from 31 to 60 days past due. 
D)  new customers whose accounts are between 31 and 60 days past due.

Question 19

If P(A) = 0.75, P(A * B) =0.86, and P(A ) B) = 0.56, then P(B) =

Accepted Answer

A)  0.25. 
B)  0.67. 
C)  0.56. 
D)  0.11. 
A)  0.25. 
B)  0.67. 
C)  0.56. 
D)  0.11.

If A and B are independent events with P(A) = 0.05 and P(B) = 0.65, then P(A ∩ B) =

Each individual outcome of an experiment is called

If A and B are mutually exclusive, then

Assuming that each of the 52 cards in an ordinary deck has a probability of 1/52 of being drawn, what is the probability of drawing a black card?

The symbol ∩ shows the

If two events are independent, then

If a six sided die is tossed two times and "3" shows up both times, the probability of "3" on the third trial is

Each customer entering a department store will either buy or not buy some merchandise.An experiment consists of following 5 customers and determining whether or not they purchase any merchandise.The number of sample points in this experiment is

If X and Y are mutually exclusive events with P(A) = 0.295, P(B) = 0.32, then P(A | B) =

If P(A) = 0.45, P(B) = 0.55, and P(A ∪ B) = 0.78, then P(A | B) =

A method of assigning probabilities which assumes that the experimental outcomes are equally likely is referred to as the _____ method.

From nine cards numbered 1 through 9, two cards are drawn.Consider the selection and classification of the cards as odd or even as an experiment.How many sample points are there for this experiment?

Twelve individuals are candidates for positions of president and vice president of an organization.How many possibilities of selections exist?

Any process that generates well-defined outcomes is a(n)

If P(A) = 0.7, P(B) = 0.6, P(A ∩ B) = 0, then events A and B are

A six-sided die is tossed 4times.The probability of observing four ones in a row is

If A and B are independent events with P(A) = .1 and P(B) = .4, then

In the set of all past due accounts, let the event A mean the account is between 31 and 60 days past due and the event B mean the account is that of a new customer.The union of A and B is all

If P(A) = 0.75, P(A * B) =0.86, and P(A ) B) = 0.56, then P(B) =

Data and Statistics

Descriptive Statistics: Tabular and Graphical Displays

Descriptive Statistics: Numerical Measures

Discrete Probability Distributions

Continuous Probability Distributions

Sampling and Sampling Distributions

Interval Estimation

Hypothesis Tests

Inference About Means and Proportions With Two Populations

Inferences About Population Variances

Comparing Multiple Proportions, Tests of Independence and Goodness of Fit

Experimental Design and Analysis of Variance

Simple Linear Regression

Multiple Regression

Filters

Exam 4: Introduction to Probability

If A and B are independent events with P(A) = 0.05 and P(B) = 0.65, then P(A ∩ B) =

Each individual outcome of an experiment is called

If A and B are mutually exclusive, then​

Assuming that each of the 52 cards in an ordinary deck has a probability of 1/52 of being drawn, what is the probability of drawing a black card?

The symbol ∩ shows the

If two events are independent, then

If a six sided die is tossed two times and "3" shows up both times, the probability of "3" on the third trial is

Each customer entering a department store will either buy or not buy some merchandise.An experiment consists of following 5 customers and determining whether or not they purchase any merchandise.The number of sample points in this experiment is

If X and Y are mutually exclusive events with P(A) = 0.295, P(B) = 0.32, then P(A | B) =

If P(A) = 0.45, P(B) = 0.55, and P(A ∪ B) = 0.78, then P(A | B) =

A method of assigning probabilities which assumes that the experimental outcomes are equally likely is referred to as the _____ method.

From nine cards numbered 1 through 9, two cards are drawn.Consider the selection and classification of the cards as odd or even as an experiment.How many sample points are there for this experiment?

Twelve individuals are candidates for positions of president and vice president of an organization.How many possibilities of selections exist?

Any process that generates well-defined outcomes is a(n)

If P(A) = 0.7, P(B) = 0.6, P(A ∩ B) = 0, then events A and B are

A six-sided die is tossed 4times.The probability of observing four ones in a row is

If A and B are independent events with P(A) = .1 and P(B) = .4, then

In the set of all past due accounts, let the event A mean the account is between 31 and 60 days past due and the event B mean the account is that of a new customer.The union of A and B is all

If P(A) = 0.75, P(A * B) =0.86, and P(A ) B) = 0.56, then P(B) =

Data and Statistics

Descriptive Statistics: Tabular and Graphical Displays

Descriptive Statistics: Numerical Measures

Discrete Probability Distributions

Continuous Probability Distributions

Sampling and Sampling Distributions

Interval Estimation

Hypothesis Tests

Inference About Means and Proportions With Two Populations

Inferences About Population Variances

Comparing Multiple Proportions, Tests of Independence and Goodness of Fit

Experimental Design and Analysis of Variance

Simple Linear Regression

Multiple Regression

Filters

If A and B are mutually exclusive, then