Exam 6: Continuous Distributions

If the number of parking spots at urban grocery stores is uniformly distributed over the interval 90 to 140, inclusively (90 $\le$ x $\le$ 140), then the standard deviation of this distribution is __________________.

(Multiple Choice)

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Question 81

Participants in a 2 day biking event, cross the finish line at a rate of 10 bike riders per fifteen minute interval.The probability that at least 2 minutes will elapse between bike riders is closest to _____________.

(Multiple Choice)

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Question 82

Let z be a normal random variable with mean 0 and standard deviation 1.The 75^th percentile of z is most closely reflected by ____________.

(Multiple Choice)

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Question 83

Many human characteristics such as height and weight and many variables such as household insurance and cost per square foot of rental space are normally distributed.

(True/False)

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Question 84

Let z be a normal random variable with mean 0 and standard deviation 1.What is P(z < 1.3)?

(Multiple Choice)

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Question 85

If the number of parking spots at urban grocery stores is uniformly distributed over the interval 90 to 140, inclusively (90 $\le$ x $\le$ 140), then P(x = exactly 100)is __________________.

(Multiple Choice)

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Question 86

Based on the caterer's experience, 38% of attendees to events will prefer chicken for the main dish.As the caterer plans for an event attended by 780 individuals, the normal approximation will be used for the binomial with a correction for continuity.In this case, what is the probability that less than 300 will prefer chicken?

(Multiple Choice)

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Question 87

Suppose the total time to fill a routine prescription at a local pharmacy averages 35 minutes starting from the time the physician places the order to the time it is dispensed.Assume the standard deviation is 11 minutes.A z score was calculated for a number, and the z score is 3.4.What is x?

(Multiple Choice)

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Question 88

If x is uniformly distributed over the interval 8 to 12, inclusively (8 $\le$ x $\le$ 12), then P(x $\ge$ 10)is __________________.

(Multiple Choice)

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Question 89

If x is uniformly distributed over the interval 8 to 12, inclusively (8 $\le$ x $\le$ 12), then the probability, P(9 $\le$ x $\le$ 11)is __________________.

(Multiple Choice)

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Question 90

Completion time (from start to finish)of a building remodeling project is normally distributed with a mean of 200 work-days and a standard deviation of 10 work-days.The probability that the project will be completed within 185 work-days is ______.

(Multiple Choice)

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Question 91

The normal distribution is an example of _______.

(Multiple Choice)

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Question 92

Let z be a normal random variable with mean 0 and standard deviation 1.What is P(1.3 < z < 2.3)?

(Multiple Choice)

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Question 93

If x, the time (in minutes)to complete an change job at certain auto service station, is uniformly distributed over the interval 20 to 30, inclusively (20 $\le$ x $\le$ 30), then the probability that an oil change job will be completed 24 minutes or more, i.e., P(x $\ge$ 24)is __________________.

(Multiple Choice)

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Question 94

The exponential distribution is an example of _______.

(Multiple Choice)

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Question 95

Based on the caterer's experience, 38% of attendees to events will prefer chicken for the main dish.As the caterer plans for an event attended by 780 individuals, the normal approximation will be used for the binomial with a correction for continuity.In this case, what is the standard deviation of the number that she would expect to prefer chicken, when determining the probability that at less than 300 will prefer chicken?

(Multiple Choice)

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Question 96

Let z be a normal random variable with mean 0 and standard deviation 1.The 90^th percentile of z is most closely reflected by ____________.

(Multiple Choice)

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Question 97

Sure Stone Tire Company has established that the useful life of a particular brand of its automobile tires is normally distributed with a mean of 40,000 miles and a standard deviation of 5000 miles.What is the probability that a randomly selected tire of this brand has a life of at least 50,000 miles?

(Multiple Choice)

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Question 98

The area under the standard normal distribution between 0 and 2 is twice the area between 0 and 1.

(True/False)

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Question 99

The exponential distribution is especially useful in queuing problems to analyze the interarrival times.

(True/False)

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Question 100

Showing 81 - 100 of 105

If the number of parking spots at urban grocery stores is uniformly distributed over the interval 90 to 140, inclusively (90 $\le$ x $\le$ 140), then the standard deviation of this distribution is __________________.

Participants in a 2 day biking event, cross the finish line at a rate of 10 bike riders per fifteen minute interval.The probability that at least 2 minutes will elapse between bike riders is closest to _____________.

Let z be a normal random variable with mean 0 and standard deviation 1.The 75^th percentile of z is most closely reflected by ____________.

Many human characteristics such as height and weight and many variables such as household insurance and cost per square foot of rental space are normally distributed.

Let z be a normal random variable with mean 0 and standard deviation 1.What is P(z < 1.3)?

If the number of parking spots at urban grocery stores is uniformly distributed over the interval 90 to 140, inclusively (90 $\le$ x $\le$ 140), then P(x = exactly 100)is __________________.

Suppose the total time to fill a routine prescription at a local pharmacy averages 35 minutes starting from the time the physician places the order to the time it is dispensed.Assume the standard deviation is 11 minutes.A z score was calculated for a number, and the z score is 3.4.What is x?

If x is uniformly distributed over the interval 8 to 12, inclusively (8 $\le$ x $\le$ 12), then P(x $\ge$ 10)is __________________.

If x is uniformly distributed over the interval 8 to 12, inclusively (8 $\le$ x $\le$ 12), then the probability, P(9 $\le$ x $\le$ 11)is __________________.

Completion time (from start to finish)of a building remodeling project is normally distributed with a mean of 200 work-days and a standard deviation of 10 work-days.The probability that the project will be completed within 185 work-days is ______.

The normal distribution is an example of _______.

Let z be a normal random variable with mean 0 and standard deviation 1.What is P(1.3 < z < 2.3)?

If x, the time (in minutes)to complete an change job at certain auto service station, is uniformly distributed over the interval 20 to 30, inclusively (20 $\le$ x $\le$ 30), then the probability that an oil change job will be completed 24 minutes or more, i.e., P(x $\ge$ 24)is __________________.

The exponential distribution is an example of _______.

Let z be a normal random variable with mean 0 and standard deviation 1.The 90^th percentile of z is most closely reflected by ____________.

The area under the standard normal distribution between 0 and 2 is twice the area between 0 and 1.

The exponential distribution is especially useful in queuing problems to analyze the interarrival times.

Introduction to Statistics and Business Analytics

Visualizing Data With Charts and Graphs

Descriptive Statistics

Probability

Discrete 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 6: Continuous Distributions

If the number of parking spots at urban grocery stores is uniformly distributed over the interval 90 to 140, inclusively (90 ≤\le≤ x ≤\le≤ 140), then the standard deviation of this distribution is __________________.

Participants in a 2 day biking event, cross the finish line at a rate of 10 bike riders per fifteen minute interval.The probability that at least 2 minutes will elapse between bike riders is closest to _____________.

Let z be a normal random variable with mean 0 and standard deviation 1.The 75th percentile of z is most closely reflected by ____________.

Many human characteristics such as height and weight and many variables such as household insurance and cost per square foot of rental space are normally distributed.

Let z be a normal random variable with mean 0 and standard deviation 1.What is P(z < 1.3)?

If the number of parking spots at urban grocery stores is uniformly distributed over the interval 90 to 140, inclusively (90 ≤\le≤ x ≤\le≤ 140), then P(x = exactly 100)is __________________.

Suppose the total time to fill a routine prescription at a local pharmacy averages 35 minutes starting from the time the physician places the order to the time it is dispensed.Assume the standard deviation is 11 minutes.A z score was calculated for a number, and the z score is 3.4.What is x?

If x is uniformly distributed over the interval 8 to 12, inclusively (8 ≤\le≤ x ≤\le≤ 12), then P(x ≥\ge≥ 10)is __________________.

If x is uniformly distributed over the interval 8 to 12, inclusively (8 ≤\le≤ x ≤\le≤ 12), then the probability, P(9 ≤\le≤ x ≤\le≤ 11)is __________________.

Completion time (from start to finish)of a building remodeling project is normally distributed with a mean of 200 work-days and a standard deviation of 10 work-days.The probability that the project will be completed within 185 work-days is ______.

The normal distribution is an example of _______.

Let z be a normal random variable with mean 0 and standard deviation 1.What is P(1.3 < z < 2.3)?

The exponential distribution is an example of _______.

Let z be a normal random variable with mean 0 and standard deviation 1.The 90th percentile of z is most closely reflected by ____________.

The area under the standard normal distribution between 0 and 2 is twice the area between 0 and 1.

The exponential distribution is especially useful in queuing problems to analyze the interarrival times.

Introduction to Statistics and Business Analytics

Visualizing Data With Charts and Graphs

Descriptive Statistics

Probability

Discrete 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

If the number of parking spots at urban grocery stores is uniformly distributed over the interval 90 to 140, inclusively (90 $\le$ x $\le$ 140), then the standard deviation of this distribution is __________________.

Let z be a normal random variable with mean 0 and standard deviation 1.The 75^th percentile of z is most closely reflected by ____________.

If the number of parking spots at urban grocery stores is uniformly distributed over the interval 90 to 140, inclusively (90 $\le$ x $\le$ 140), then P(x = exactly 100)is __________________.

If x is uniformly distributed over the interval 8 to 12, inclusively (8 $\le$ x $\le$ 12), then P(x $\ge$ 10)is __________________.

If x is uniformly distributed over the interval 8 to 12, inclusively (8 $\le$ x $\le$ 12), then the probability, P(9 $\le$ x $\le$ 11)is __________________.

Let z be a normal random variable with mean 0 and standard deviation 1.The 90^th percentile of z is most closely reflected by ____________.