Exam 6: Discrete Probability Distributions

Judging from recent experience,5 percent of the computer keyboards produced by an automatic,high-speed machine are defective.If six keyboards are randomly selected,what is the probability that none of the keyboards are defective?

(Multiple Choice)

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Question 81

What kind of distribution are the binomial and Poisson distributions?

(Multiple Choice)

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Question 82

A company is studying the number of daily debit card purchases.If there were 20 purchases and the probability of a debit card purchase is 0.5.What is the shape of this distribution? Explain your answer.

(Essay)

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Question 83

A company is studying the number of monthly absences among its 125 employees. The following probability distribution shows the likelihood that people were absent 0, 1, 2, 3, 4, or 5 days last month. -What is the variance of the number of days absent?

(Multiple Choice)

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Question 84

A discrete random variable can have only certain clearly separated values.

(True/False)

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Question 85

A company is studying the number of monthly absences among its 125 employees. The following probability distribution shows the likelihood that people were absent 0, 1, 2, 3, 4, or 5 days last month. -What is the mean number of days absent?

(Multiple Choice)

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Question 86

If we measure the weight of a car,the variable is a discrete random variable.

(True/False)

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Question 87

A probability distribution shows the outcomes of an experiment and the ___________________ of each one occurring.

(Short Answer)

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Question 88

Which shape describes a Poisson distribution?

(Multiple Choice)

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Question 89

To construct a binomial distribution,it is necessary to know the total number of trials and the probability of success on each trial.

(True/False)

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Question 90

A manufacturer of headache medicine claims it is 70 percent effective within a few minutes.That is,out of every 100 users 70 get relief within a few minutes.A group of 12 patients are given the medicine.If the claim is true,what is the probability that 8 have relief within a few minutes?

(Multiple Choice)

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Question 91

David's gasoline station offers 4 cents off per gallon if the customer pays in cash and does not use a credit card. Past evidence indicates that 40% of all customers pay in cash. During a one-hour period twenty-five customers buy gasoline at this station. -What is the probability that no more than twenty pay in cash?

(Multiple Choice)

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Question 92

If the probability of success ( $\pi$ )remains the same,but n increases,the shape of the binomial distribution becomes more symmetrical.

(True/False)

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Question 93

The Poisson probability distribution is a continuous probability distribution.

(True/False)

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Question 94

Showing 81 - 94 of 94

Judging from recent experience,5 percent of the computer keyboards produced by an automatic,high-speed machine are defective.If six keyboards are randomly selected,what is the probability that none of the keyboards are defective?

What kind of distribution are the binomial and Poisson distributions?

A company is studying the number of daily debit card purchases.If there were 20 purchases and the probability of a debit card purchase is 0.5.What is the shape of this distribution? Explain your answer.

A company is studying the number of monthly absences among its 125 employees. The following probability distribution shows the likelihood that people were absent 0, 1, 2, 3, 4, or 5 days last month. -What is the variance of the number of days absent?

A discrete random variable can have only certain clearly separated values.

A company is studying the number of monthly absences among its 125 employees. The following probability distribution shows the likelihood that people were absent 0, 1, 2, 3, 4, or 5 days last month. -What is the mean number of days absent?

If we measure the weight of a car,the variable is a discrete random variable.

A probability distribution shows the outcomes of an experiment and the ___________________ of each one occurring.

Which shape describes a Poisson distribution?

To construct a binomial distribution,it is necessary to know the total number of trials and the probability of success on each trial.

A manufacturer of headache medicine claims it is 70 percent effective within a few minutes.That is,out of every 100 users 70 get relief within a few minutes.A group of 12 patients are given the medicine.If the claim is true,what is the probability that 8 have relief within a few minutes?

If the probability of success ( $\pi$ )remains the same,but n increases,the shape of the binomial distribution becomes more symmetrical.

The Poisson probability distribution is a continuous probability distribution.

What Is Statistics

Describing Data: Frequency Distributions and Graphic Presentations

Describing Data: Numerical Measures

Describing Data: Displaying and Exploring Data

A Survey of Probability Concepts

Continuous Probability Distributions

Sampling Methods and the Central Limit Theorem

Estimation and Confidence Intervals

One-Sample Tests of Hypothesis

Two-Sample Tests of Hypothesis

Analysis of Variance

Linear Regression and Correlation

Multiple Regression and Correlation Analysis

Chi-Square Applications

Filters

Exam 6: Discrete Probability Distributions

Judging from recent experience,5 percent of the computer keyboards produced by an automatic,high-speed machine are defective.If six keyboards are randomly selected,what is the probability that none of the keyboards are defective?

What kind of distribution are the binomial and Poisson distributions?

A company is studying the number of daily debit card purchases.If there were 20 purchases and the probability of a debit card purchase is 0.5.What is the shape of this distribution? Explain your answer.

A company is studying the number of monthly absences among its 125 employees. The following probability distribution shows the likelihood that people were absent 0, 1, 2, 3, 4, or 5 days last month. -What is the variance of the number of days absent?

A discrete random variable can have only certain clearly separated values.

A company is studying the number of monthly absences among its 125 employees. The following probability distribution shows the likelihood that people were absent 0, 1, 2, 3, 4, or 5 days last month. -What is the mean number of days absent?

If we measure the weight of a car,the variable is a discrete random variable.

A probability distribution shows the outcomes of an experiment and the ___________________ of each one occurring.

Which shape describes a Poisson distribution?

To construct a binomial distribution,it is necessary to know the total number of trials and the probability of success on each trial.

A manufacturer of headache medicine claims it is 70 percent effective within a few minutes.That is,out of every 100 users 70 get relief within a few minutes.A group of 12 patients are given the medicine.If the claim is true,what is the probability that 8 have relief within a few minutes?

If the probability of success ( π\piπ )remains the same,but n increases,the shape of the binomial distribution becomes more symmetrical.

The Poisson probability distribution is a continuous probability distribution.

What Is Statistics

Describing Data: Frequency Distributions and Graphic Presentations

Describing Data: Numerical Measures

Describing Data: Displaying and Exploring Data

A Survey of Probability Concepts

Continuous Probability Distributions

Sampling Methods and the Central Limit Theorem

Estimation and Confidence Intervals

One-Sample Tests of Hypothesis

Two-Sample Tests of Hypothesis

Analysis of Variance

Linear Regression and Correlation

Multiple Regression and Correlation Analysis

Chi-Square Applications

Filters

If the probability of success ( $\pi$ )remains the same,but n increases,the shape of the binomial distribution becomes more symmetrical.