Exam 5: Probability: an Introduction to Modeling Uncertainty

A health conscious student faithfully wears a device that tracks his steps. Suppose that the distribution of the number of steps he takes in a day is normally distributed with a mean of 10,000 and a standard deviation of 1,500 steps. One day he took 15,000 steps. What was his percentile on that day?

(Multiple Choice)

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Question 21

Fast food restaurants pride themselves in being able to fill orders quickly. A study was done at a local fast food restaurant to determine how long it took customers to receive their order at the drive thru. It was discovered that the time it takes for orders to be filled is exponentially distributed with a mean of 1.5 minutes. What is the probability density function for the time it takes to fill an order?

(Multiple Choice)

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Question 22

A health conscious student faithfully wears a device that tracks his steps. Suppose that the distribution of the number of steps he takes is normally distributed with a mean of 10,000 and a standard deviation of 1,500 steps. How many steps would he have to take to make the cut for the top 5% for his distribution?

(Multiple Choice)

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Question 23

What is the mean of x, given the exponential probability function $f ( x ) = \frac { 1 } { 20 } e ^ { \frac { x } { 20 } } \text { for } x \geq 0 \text { ? }$

(Multiple Choice)

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Question 24

The newest model of smart car is supposed to get excellent gas mileage. A thorough study showed that gas mileage (measured in miles per gallon) is normally distributed with a mean of 75 miles per gallon and a standard deviation of 10 miles per gallon. What is the probability that, if driven normally, the car will get 100 miles per gallon or better?

(Multiple Choice)

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Question 25

James has two fair coins. When he flips them, what is the sample space?

(Essay)

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Question 26

Which of the following is a discrete random variable?

(Multiple Choice)

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Question 27

All the events in the sample space that are not part of the specified event are called

(Multiple Choice)

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Question 28

The __________ probability distribution can be used to estimate the number of vehicles that go through an intersection during the lunch hour.

(Multiple Choice)

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Question 29

Fast food restaurants pride themselves in being able to fill orders quickly. A study was done at a local fast food restaurant to determine how long it took customers to receive their order at the drive-thru. It was discovered that the time it takes for orders to be filled is exponentially distributed with a mean of 1.5 minutes. What is the probability that it takes less than one minute to fill an order?

(Multiple Choice)

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Question 30

Bayes' theorem is a method used to compute __________ probabilities.

(Multiple Choice)

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Question 31

A survey of 100 random high school students finds that 85 students watched the Super Bowl, 25 students watched the Stanley Cup Finals, and 20 students watched both games. How many students did not watch either game?

(Multiple Choice)

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Question 32

A variable that can only take on specific numeric values is called a

(Multiple Choice)

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Question 33

The center of a normal curve is

(Multiple Choice)

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Question 34

An initial estimate of the probabilities of events is a __________ probability.

(Multiple Choice)

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Question 35

Which of the following is not a characteristic of the normal probability distribution?

(Multiple Choice)

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Question 36

Showing 21 - 36 of 36

A health conscious student faithfully wears a device that tracks his steps. Suppose that the distribution of the number of steps he takes in a day is normally distributed with a mean of 10,000 and a standard deviation of 1,500 steps. One day he took 15,000 steps. What was his percentile on that day?

What is the mean of x, given the exponential probability function $f ( x ) = \frac { 1 } { 20 } e ^ { \frac { x } { 20 } } \text { for } x \geq 0 \text { ? }$

James has two fair coins. When he flips them, what is the sample space?

Which of the following is a discrete random variable?

All the events in the sample space that are not part of the specified event are called

The __________ probability distribution can be used to estimate the number of vehicles that go through an intersection during the lunch hour.

Bayes' theorem is a method used to compute __________ probabilities.

A survey of 100 random high school students finds that 85 students watched the Super Bowl, 25 students watched the Stanley Cup Finals, and 20 students watched both games. How many students did not watch either game?

A variable that can only take on specific numeric values is called a

The center of a normal curve is

An initial estimate of the probabilities of events is a __________ probability.

Which of the following is not a characteristic of the normal probability distribution?

Introduction

Descriptive Statistics

Data Visualization

Descriptive Data Mining

Statistical Inference

Linear Regression

Time Series Analysis and Forecasting

Predictive Data Mining

Spreadsheet Models

Monte Carlo Simulation

Linear Optimization Models

Integer Linear Optimization Models

Nonlinear Optimization Models

Decision Analysis

Filters

Exam 5: Probability: an Introduction to Modeling Uncertainty

What is the mean of x, given the exponential probability function f(x)=120ex20 for x≥0 ? f ( x ) = \frac { 1 } { 20 } e ^ { \frac { x } { 20 } } \text { for } x \geq 0 \text { ? }f(x)=201​e20x​ for x≥0 ?

James has two fair coins. When he flips them, what is the sample space?

Which of the following is a discrete random variable?

All the events in the sample space that are not part of the specified event are called

The __________ probability distribution can be used to estimate the number of vehicles that go through an intersection during the lunch hour.

Bayes' theorem is a method used to compute __________ probabilities.

A survey of 100 random high school students finds that 85 students watched the Super Bowl, 25 students watched the Stanley Cup Finals, and 20 students watched both games. How many students did not watch either game?

A variable that can only take on specific numeric values is called a

The center of a normal curve is

An initial estimate of the probabilities of events is a __________ probability.

Which of the following is not a characteristic of the normal probability distribution?

Introduction

Descriptive Statistics

Data Visualization

Descriptive Data Mining

Statistical Inference

Linear Regression

Time Series Analysis and Forecasting

Predictive Data Mining

Spreadsheet Models

Monte Carlo Simulation

Linear Optimization Models

Integer Linear Optimization Models

Nonlinear Optimization Models

Decision Analysis

Filters

What is the mean of x, given the exponential probability function $f ( x ) = \frac { 1 } { 20 } e ^ { \frac { x } { 20 } } \text { for } x \geq 0 \text { ? }$