Exam 7: Continuous Probability Distributions

For Gardyloo Manufacturing, the true proportion of accounts receivable with some kind of error is .20. If an auditor randomly samples 225 accounts receivable, what is the approximate normal probability that 39 or fewer will contain errors?

(Multiple Choice)

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Question 81

Which model best describes your waiting time until you get the next nonworking web URL ("This page cannot be displayed") as you click on various websites for Florida condo rentals?

(Multiple Choice)

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Question 82

Which is the correct Excel formula for the 80^th percentile of a distribution that is N(475, 33)?

(Multiple Choice)

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Question 83

A random variable X is best described by a continuous uniform distribution from 20 to 45 inclusive. The mean of this distribution is:

(Multiple Choice)

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Question 84

Could this function be a PDF?

(Multiple Choice)

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Question 85

The price-earnings ratio for firms in a given industry follows the normal distribution. In this industry, a firm whose price-earnings ratio has a standardized value of z = 1.00 is approximately in the highest ______ percent of firms in the industry.

(Multiple Choice)

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Question 86

If arrivals occur at a mean rate of 3.6 events per hour, the exponential probability of waiting less than 0.5 hour for the next arrival is:

(Multiple Choice)

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Question 87

In a continuous distribution the

(Multiple Choice)

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Question 88

Bob used a triangular distribution of T(20, 30, 61) to represent his daily commute time (minutes). Which statement is incorrect?

(Multiple Choice)

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Question 89

If the mean time between unscheduled maintenance of LCD displays in a hospital's CT scan facility is 4,000 operating hours, what is the probability of unscheduled maintenance in the next 5,000 hours?

(Multiple Choice)

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Question 90

The standard deviation of a normal random variable X is $20. Given that P(X ≤ $10) = 0.1841. From this we can determine that the mean of the distribution is equal to:

(Multiple Choice)

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Question 91

The area under the normal curve between the 20^th and 70^th percentiles is equal to:

(Multiple Choice)

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Question 92

If arrivals follow a Poisson distribution with mean 1.2 arrivals per minute, find the 75^th percentile of waiting times until the next arrival (i.e., 75 percent below).

(Multiple Choice)

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Question 93

Phyllis used a triangular distribution of T(10, 15, 20) to represent her daily commute time (minutes). Which statement is incorrect?

(Multiple Choice)

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Question 94

If the mean time between in-flight aircraft engine shutdowns is 12,500 operating hours, the 90^th percentile of waiting times to the next shutdown will be:

(Multiple Choice)

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Question 95

The area under the normal curve between z = 0 and z = 1 is ______________ the area under the normal curve between z = 1 and z = 2.

(Multiple Choice)

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Question 96

The number of lightning strikes in a day in Miami is a continuous random variable.

(True/False)

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Question 97

A machine dispenses water into a glass. Assuming that the amount of water dispensed follows a continuous uniform distribution from 10 ounces to 16 ounces, the average amount of water dispensed by the machine is:

(Multiple Choice)

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Question 98

The triangular distribution T(0, 10, 20) is skewed left.

(True/False)

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Question 99

The random variable X is normally distributed with mean of 80 and variance of 36. The 67^th percentile of the distribution is:

(Multiple Choice)

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Question 100

Showing 81 - 100 of 120

For Gardyloo Manufacturing, the true proportion of accounts receivable with some kind of error is .20. If an auditor randomly samples 225 accounts receivable, what is the approximate normal probability that 39 or fewer will contain errors?

Which model best describes your waiting time until you get the next nonworking web URL ("This page cannot be displayed") as you click on various websites for Florida condo rentals?

Which is the correct Excel formula for the 80^th percentile of a distribution that is N(475, 33)?

A random variable X is best described by a continuous uniform distribution from 20 to 45 inclusive. The mean of this distribution is:

Could this function be a PDF?

The price-earnings ratio for firms in a given industry follows the normal distribution. In this industry, a firm whose price-earnings ratio has a standardized value of z = 1.00 is approximately in the highest ______ percent of firms in the industry.

If arrivals occur at a mean rate of 3.6 events per hour, the exponential probability of waiting less than 0.5 hour for the next arrival is:

In a continuous distribution the

Bob used a triangular distribution of T(20, 30, 61) to represent his daily commute time (minutes). Which statement is incorrect?

If the mean time between unscheduled maintenance of LCD displays in a hospital's CT scan facility is 4,000 operating hours, what is the probability of unscheduled maintenance in the next 5,000 hours?

The standard deviation of a normal random variable X is $20. Given that P(X ≤ $10) = 0.1841. From this we can determine that the mean of the distribution is equal to:

The area under the normal curve between the 20^th and 70^th percentiles is equal to:

If arrivals follow a Poisson distribution with mean 1.2 arrivals per minute, find the 75^th percentile of waiting times until the next arrival (i.e., 75 percent below).

Phyllis used a triangular distribution of T(10, 15, 20) to represent her daily commute time (minutes). Which statement is incorrect?

If the mean time between in-flight aircraft engine shutdowns is 12,500 operating hours, the 90^th percentile of waiting times to the next shutdown will be:

The area under the normal curve between z = 0 and z = 1 is ______________ the area under the normal curve between z = 1 and z = 2.

The number of lightning strikes in a day in Miami is a continuous random variable.

A machine dispenses water into a glass. Assuming that the amount of water dispensed follows a continuous uniform distribution from 10 ounces to 16 ounces, the average amount of water dispensed by the machine is:

The triangular distribution T(0, 10, 20) is skewed left.

The random variable X is normally distributed with mean of 80 and variance of 36. The 67^th percentile of the distribution is:

Overview of Statistics

Data Collection

Describing Data Visually

Descriptive Statistics

Probability

Discrete Probability Distributions

Sampling Distributions and Estimation

One-Sample Hypothesis Tests

Two-Sample Hypothesis Tests

Analysis of Variance

Simple Regression

Multiple Regression

Time Series Analysis

Chi-Square Tests

Nonparametric Tests

Quality Management

Filters

Exam 7: Continuous Probability Distributions

For Gardyloo Manufacturing, the true proportion of accounts receivable with some kind of error is .20. If an auditor randomly samples 225 accounts receivable, what is the approximate normal probability that 39 or fewer will contain errors?

Which model best describes your waiting time until you get the next nonworking web URL ("This page cannot be displayed") as you click on various websites for Florida condo rentals?

Which is the correct Excel formula for the 80th percentile of a distribution that is N(475, 33)?

A random variable X is best described by a continuous uniform distribution from 20 to 45 inclusive. The mean of this distribution is:

Could this function be a PDF?

The price-earnings ratio for firms in a given industry follows the normal distribution. In this industry, a firm whose price-earnings ratio has a standardized value of z = 1.00 is approximately in the highest ______ percent of firms in the industry.

If arrivals occur at a mean rate of 3.6 events per hour, the exponential probability of waiting less than 0.5 hour for the next arrival is:

In a continuous distribution the

Bob used a triangular distribution of T(20, 30, 61) to represent his daily commute time (minutes). Which statement is incorrect?

If the mean time between unscheduled maintenance of LCD displays in a hospital's CT scan facility is 4,000 operating hours, what is the probability of unscheduled maintenance in the next 5,000 hours?

The standard deviation of a normal random variable X is $20. Given that P(X ≤ $10) = 0.1841. From this we can determine that the mean of the distribution is equal to:

The area under the normal curve between the 20th and 70th percentiles is equal to:

If arrivals follow a Poisson distribution with mean 1.2 arrivals per minute, find the 75th percentile of waiting times until the next arrival (i.e., 75 percent below).

Phyllis used a triangular distribution of T(10, 15, 20) to represent her daily commute time (minutes). Which statement is incorrect?

If the mean time between in-flight aircraft engine shutdowns is 12,500 operating hours, the 90th percentile of waiting times to the next shutdown will be:

The area under the normal curve between z = 0 and z = 1 is ______________ the area under the normal curve between z = 1 and z = 2.

The number of lightning strikes in a day in Miami is a continuous random variable.

A machine dispenses water into a glass. Assuming that the amount of water dispensed follows a continuous uniform distribution from 10 ounces to 16 ounces, the average amount of water dispensed by the machine is:

The triangular distribution T(0, 10, 20) is skewed left.

The random variable X is normally distributed with mean of 80 and variance of 36. The 67th percentile of the distribution is:

Overview of Statistics

Data Collection

Describing Data Visually

Descriptive Statistics

Probability

Discrete Probability Distributions

Sampling Distributions and Estimation

One-Sample Hypothesis Tests

Two-Sample Hypothesis Tests

Analysis of Variance

Simple Regression

Multiple Regression

Time Series Analysis

Chi-Square Tests

Nonparametric Tests

Quality Management

Filters

Which is the correct Excel formula for the 80^th percentile of a distribution that is N(475, 33)?

The area under the normal curve between the 20^th and 70^th percentiles is equal to:

If arrivals follow a Poisson distribution with mean 1.2 arrivals per minute, find the 75^th percentile of waiting times until the next arrival (i.e., 75 percent below).

If the mean time between in-flight aircraft engine shutdowns is 12,500 operating hours, the 90^th percentile of waiting times to the next shutdown will be:

The random variable X is normally distributed with mean of 80 and variance of 36. The 67^th percentile of the distribution is: