Question 1

The expected value of a random variable is

Accepted Answer

A)  the value of the random variable that should be observed on the next repeat of the experiment. 
B)  the value of the random variable that occurs most frequently. 
C)  the square root of the variance. 
D)  None of these alternatives is correct. 
A)  the value of the random variable that should be observed on the next repeat of the experiment. 
B)  the value of the random variable that occurs most frequently. 
C)  the square root of the variance. 
D)  None of these alternatives is correct. D

Question 2

When dealing with the number of occurrences of an event over a specified interval of time or space, the appropriate probability distribution is a _____ distribution.

Accepted Answer

A)  Binomial 
B)  Poisson 
C)  Normal 
D)  Hypergeometric probability 
A)  Binomial 
B)  Poisson 
C)  Normal 
D)  Hypergeometric probability B

Question 3

The probability distribution for the number of goals the Lions soccer team makes per game is given below. ​   The expected number of goals per game is

Accepted Answer

A)  2. 
B)  2.33. 
C)  2.5. 
D)  1.1. 
A)  2. 
B)  2.33. 
C)  2.5. 
D)  1.1. B

Question 4

The following table shows part of the probability distribution for the number of boats sold daily at Boats Unlimited.It is known that the average number of boats sold daily is 1.57.   ​
Compute the variance and the standard deviation for this probability distribution.

Accepted Answer

Variance = 1.4051, S

Question 5

The random variable x is the number of occurrences of an event over an interval of ten minutes.It can be assumed that the probability of an occurrence is the same in any two time periods of an equal length.It is known that the mean number of occurrences in ten minutes is 5.3.The appropriate probability distribution for the random variable is

Accepted Answer

A)  discrete. 
B)  continuous. 
C)  either discrete or continuous depending on how the interval is defined. 
D)  binomial. 
A)  discrete. 
B)  continuous. 
C)  either discrete or continuous depending on how the interval is defined. 
D)  binomial.

Question 6

The expected value for a binomial distribution is given by equation

Accepted Answer

A)  (n - 1)(1 - p). 
B)  n(1 - p). 
C)  np. 
D)  (n - 1)p. 
A)  (n - 1)(1 - p). 
B)  n(1 - p). 
C)  np. 
D)  (n - 1)p.

Question 7

Thirty-six percent of the students in a management class are graduate students.A random sample of 5 students is selected.Using the binomial probability function, determine the probability that the sample contains exactly 2 graduate students? (Round to four decimal places.)

Accepted Answer

The answer of Thirty-six percent of the students in a...

Question 8

Experiments with repeated independent trials will be described by the binomial distribution if​

Accepted Answer

A)  ​the trials are continuous. 
B)  ​each trial result influences the next. 
C)  ​the time between trials is constant. 
D)  ​each trial has exactly two outcomes whose probabilities do not change. 
A)  ​the trials are continuous. 
B)  ​each trial result influences the next. 
C)  ​the time between trials is constant. 
D)  ​each trial has exactly two outcomes whose probabilities do not change.

Question 9

A production process produces 3% defective parts.A sample of five parts from the production process is selected.What is the probability that the sample contains exactly two defective parts?

Accepted Answer

A)  0.9918 
B)  0.0082 
C)  0.0003 
D)  0.9997 
A)  0.9918 
B)  0.0082 
C)  0.0003 
D)  0.9997

Question 10

The probability distribution for the daily sales at Michael's Co.is given below. ​   ​
The expected daily sales are

Accepted Answer

A)  $53,000. 
B)  $55,000. 
C)  $50,000. 
D)  $60,000. 
A)  $53,000. 
B)  $55,000. 
C)  $50,000. 
D)  $60,000.

Question 11

The binomial probability distribution is used with a(n) _____ random variable.

Accepted Answer

A)  continuous 
B)  discrete 
C)  uniform 
D)  intermittent 
A)  continuous 
B)  discrete 
C)  uniform 
D)  intermittent

Question 12

Roth is a computer-consulting firm.The number of new clients that they have obtained each month has ranged from 0 to 6.The number of new clients has the probability distribution that is shown below. ​   ​
The standard deviation is

Accepted Answer

A)  1.45. 
B)  2.09. 
C)  3.1. 
D)  9.61. 
A)  1.45. 
B)  2.09. 
C)  3.1. 
D)  9.61.

Question 13

The key difference between the binomial and hypergeometric distribution is that, with the hypergeometric distribution the

Accepted Answer

A)  probability of success must be less than 0.5. 
B)  probability of success changes from trial to trial. 
C)  trials are independent of each other. 
D)  random variable is continuous. 
A)  probability of success must be less than 0.5. 
B)  probability of success changes from trial to trial. 
C)  trials are independent of each other. 
D)  random variable is continuous.

Question 14

A name closely associated with the binomial probability distribution is​

Accepted Answer

A)  ​Bernoulli. 
B)  ​de Moivre. 
C)  ​Pareto. 
D)  ​Poisson. 
A)  ​Bernoulli. 
B)  ​de Moivre. 
C)  ​Pareto. 
D)  ​Poisson.

Question 15

Which of the following is not a characteristic of an experiment where the binomial probability distribution is applicable?

Accepted Answer

A)  The experiment has a sequence of n identical trials. 
B)  Exactly two outcomes are possible on each trial. 
C)  The trials are dependent. 
D)  The probabilities of the outcomes do not change from one trial to another. 
A)  The experiment has a sequence of n identical trials. 
B)  Exactly two outcomes are possible on each trial. 
C)  The trials are dependent. 
D)  The probabilities of the outcomes do not change from one trial to another.

Question 16

The probability distribution for the number of goals the Lions soccer team makes per game is given below. ​   ​
What is the probability that in a given game the Lions will score less than 2 goals?

Accepted Answer

A)  .20 
B)  .50 
C)  .15 
D)  .80 
A)  .20 
B)  .50 
C)  .15 
D)  .80

Question 17

The use of the relative frequency method to develop discrete probability distributions leads to what is called a _____ discrete distribution.

Accepted Answer

A)  binomial 
B)  empirical 
C)  non-uniform 
D)  uniform 
A)  binomial 
B)  empirical 
C)  non-uniform 
D)  uniform

Question 18

In the textile industry, a manufacturer is interested in the number of blemishes or flaws occurring in each 100 feet of material.The probability distribution that has the greatest chance of applying to this situation is the _____ distribution

Accepted Answer

A)  Normal 
B)  Binomial 
C)  Poisson 
D)  Uniform 
A)  Normal 
B)  Binomial 
C)  Poisson 
D)  Uniform

Question 19

The following represents the probability distribution for the daily demand of computers at a local store.   ​ The expected daily demand is

Accepted Answer

A)  1.0. 
B)  1.75. 
C)  2.0. 
D)  1.09. 
A)  1.0. 
B)  1.75. 
C)  2.0. 
D)  1.09.

Question 20

In a binomial experiment the probability of success is 0.16.What is the probability of two successes in seven trials?

Accepted Answer

A)  0.7752 
B)  0.0866 
C)  0.2248 
D)  0.9134 
A)  0.7752 
B)  0.0866 
C)  0.2248 
D)  0.9134

The expected value of a random variable is

When dealing with the number of occurrences of an event over a specified interval of time or space, the appropriate probability distribution is a _____ distribution.

The probability distribution for the number of goals the Lions soccer team makes per game is given below. The expected number of goals per game is

The following table shows part of the probability distribution for the number of boats sold daily at Boats Unlimited.It is known that the average number of boats sold daily is 1.57. Compute the variance and the standard deviation for this probability distribution.

The expected value for a binomial distribution is given by equation

Thirty-six percent of the students in a management class are graduate students.A random sample of 5 students is selected.Using the binomial probability function, determine the probability that the sample contains exactly 2 graduate students? (Round to four decimal places.)

Experiments with repeated independent trials will be described by the binomial distribution if

A production process produces 3% defective parts.A sample of five parts from the production process is selected.What is the probability that the sample contains exactly two defective parts?

The probability distribution for the daily sales at Michael's Co.is given below. The expected daily sales are

The binomial probability distribution is used with a(n) _____ random variable.

Roth is a computer-consulting firm.The number of new clients that they have obtained each month has ranged from 0 to 6.The number of new clients has the probability distribution that is shown below. The standard deviation is

The key difference between the binomial and hypergeometric distribution is that, with the hypergeometric distribution the

A name closely associated with the binomial probability distribution is

Which of the following is not a characteristic of an experiment where the binomial probability distribution is applicable?

The probability distribution for the number of goals the Lions soccer team makes per game is given below. What is the probability that in a given game the Lions will score less than 2 goals?

The use of the relative frequency method to develop discrete probability distributions leads to what is called a _____ discrete distribution.

In the textile industry, a manufacturer is interested in the number of blemishes or flaws occurring in each 100 feet of material.The probability distribution that has the greatest chance of applying to this situation is the _____ distribution

The following represents the probability distribution for the daily demand of computers at a local store. The expected daily demand is

In a binomial experiment the probability of success is 0.16.What is the probability of two successes in seven trials?

Data and Statistics

Descriptive Statistics: Tabular and Graphical Displays

Descriptive Statistics: Numerical Measures

Introduction to Probability

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

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Exam 5: Discrete Probability Distributions

The expected value of a random variable is

When dealing with the number of occurrences of an event over a specified interval of time or space, the appropriate probability distribution is a _____ distribution.

The probability distribution for the number of goals the Lions soccer team makes per game is given below. ​ The expected number of goals per game is

The following table shows part of the probability distribution for the number of boats sold daily at Boats Unlimited.It is known that the average number of boats sold daily is 1.57. ​ Compute the variance and the standard deviation for this probability distribution.

The expected value for a binomial distribution is given by equation

Thirty-six percent of the students in a management class are graduate students.A random sample of 5 students is selected.Using the binomial probability function, determine the probability that the sample contains exactly 2 graduate students? (Round to four decimal places.)

Experiments with repeated independent trials will be described by the binomial distribution if​

A production process produces 3% defective parts.A sample of five parts from the production process is selected.What is the probability that the sample contains exactly two defective parts?

The probability distribution for the daily sales at Michael's Co.is given below. ​ ​ The expected daily sales are

The binomial probability distribution is used with a(n) _____ random variable.

Roth is a computer-consulting firm.The number of new clients that they have obtained each month has ranged from 0 to 6.The number of new clients has the probability distribution that is shown below. ​ ​ The standard deviation is

The key difference between the binomial and hypergeometric distribution is that, with the hypergeometric distribution the

A name closely associated with the binomial probability distribution is​

Which of the following is not a characteristic of an experiment where the binomial probability distribution is applicable?

The probability distribution for the number of goals the Lions soccer team makes per game is given below. ​ ​ What is the probability that in a given game the Lions will score less than 2 goals?

The use of the relative frequency method to develop discrete probability distributions leads to what is called a _____ discrete distribution.

In the textile industry, a manufacturer is interested in the number of blemishes or flaws occurring in each 100 feet of material.The probability distribution that has the greatest chance of applying to this situation is the _____ distribution

The following represents the probability distribution for the daily demand of computers at a local store. ​ The expected daily demand is

In a binomial experiment the probability of success is 0.16.What is the probability of two successes in seven trials?

Data and Statistics

Descriptive Statistics: Tabular and Graphical Displays

Descriptive Statistics: Numerical Measures

Introduction to Probability

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

The probability distribution for the number of goals the Lions soccer team makes per game is given below. The expected number of goals per game is

The following table shows part of the probability distribution for the number of boats sold daily at Boats Unlimited.It is known that the average number of boats sold daily is 1.57. Compute the variance and the standard deviation for this probability distribution.

Experiments with repeated independent trials will be described by the binomial distribution if

The probability distribution for the daily sales at Michael's Co.is given below. The expected daily sales are

Roth is a computer-consulting firm.The number of new clients that they have obtained each month has ranged from 0 to 6.The number of new clients has the probability distribution that is shown below. The standard deviation is

A name closely associated with the binomial probability distribution is

The probability distribution for the number of goals the Lions soccer team makes per game is given below. What is the probability that in a given game the Lions will score less than 2 goals?

The following represents the probability distribution for the daily demand of computers at a local store. The expected daily demand is