Question 1

The binomial probability distribution is most symmetric when

Accepted Answer

A) n is 30 or greater 
B) n equals p 
C) p approaches 1 
D) p equals 0.5 
A) n is 30 or greater 
B) n equals p 
C) p approaches 1 
D) p equals 0.5

Question 2

Probabilities for discrete random variables are defined over intervals by a probability density function.

Accepted Answer

A) True 
 B)False

Question 3

z is a standard normal random variable.The P(z ≥ 2.11)equals

Accepted Answer

A) 0.4821 
B) 0.9821 
C) 0.5 
D) 0.0174 
A) 0.4821 
B) 0.9821 
C) 0.5 
D) 0.0174

Question 4

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 5

For a standard normal distribution,the probability of obtaining a z value of less than 1.6 is​

Accepted Answer

A) ​0.1600 
B) ​0.0160 
C) ​0.0016 
D) ​0.9452 
A) ​0.1600 
B) ​0.0160 
C) ​0.0016 
D) ​0.9452

Question 6

Experimental outcomes that are based on measurement scales such as time,weight,and distance can be described by _____ random variables.

Accepted Answer

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

Question 7

A binomial probability distribution with p = .3 is

Accepted Answer

A) negatively skewed 
B) symmetrical 
C) positively skewed 
D) bimodal 
A) negatively skewed 
B) symmetrical 
C) positively skewed 
D) bimodal

Question 8

A salesperson contacts eight potential customers per day.From past experience,we know that the probability of a potential customer making a purchase is 0.10.
a.Define the random variable in words for this experiment.
b.What is the probability the salesperson will make exactly two sales in a day?
c.What is the probability the salesperson will make at least two sales in a day?
d.What percentage of days will the salesperson not make a sale?
e.What is the expected number of sales per day?
​

Accepted Answer

​
​
​
 a. @#LAT-DLM& the numbe

Question 9

Explain the transformation from any normal distribution to the standard normal.​

Accepted Answer

The transformation from any normal distr

Question 10

The probability of a continuous variable having a specific value is 0.

Accepted Answer

A) True 
 B)False

Question 11

A probability density function

Accepted Answer

A) gives the probability that the random variable equals a specific value of x. 
B) is used for discrete random variables. 
C) describes the graph whose underlying area represents probability over an interval. 
D) each of these choices are true. 
A) gives the probability that the random variable equals a specific value of x. 
B) is used for discrete random variables. 
C) describes the graph whose underlying area represents probability over an interval. 
D) each of these choices are true.

Question 12

An experiment consists of measuring the speed of automobiles on a highway by the use of radar equipment.The random variable in this experiment is speed,measured in miles per hour.This random variable is a

Accepted Answer

A) discrete random variable 
B) continuous random variable 
C) complex random variable 
D) None of these alternatives is correct. 
A) discrete random variable 
B) continuous random variable 
C) complex random variable 
D) None of these alternatives is correct.

Question 13

A local bank has determined that the daily balances of the checking accounts of its customers are normally distributed with an average of $280 and a standard deviation of $20.
a.What percentage of its customers has daily balances of more than $275?
b.What percentage of its customers has daily balances less than $243?
c.What percentage of its customers' balances is between $241 and $301.60?
​

Accepted Answer

The answer of A local bank has determined that the...

Question 14

When the exponential distribution probability is given as P(x ≤ 9 )= 1 − e−9/18 the average value for x is

Accepted Answer

A) 18 
B) 9 
C) 9/18 
D) 1/2 
A) 18 
B) 9 
C) 9/18 
D) 1/2

Question 15

Scores on an endurance test for cardiac patients are normally distributed with μ = 182 and σ = 24.
a.What is the probability a patient will score above 190?
b.What percentage of patients score below 170?
c.What score does a patient at the 75th percentile receive?

Accepted Answer

The answer of Scores on an endurance test for cardiac...

Question 16

The weight of a .5 cubic yard bag of landscape mulch in uniformly distributed over the interval from 38.5 to 41.5 pounds.
a.Give a mathematical expression for the probability density function.
b.What is the probability that a bag will weigh more than 40 pounds?
c.What is the probability that a bag will weigh less than 39 pounds?
d.What is the probability that a bag will weigh between 39 and 40 pounds?

Accepted Answer

None

Question 17

The time required to assemble a part of a machine follows an exponential probability distribution with a mean of 14 minutes.
a.What is the probability that the part can be assembled in 7 minutes or less?
b.What is the probability that the part can be assembled between 3.5 and 7 minutes?
​

Accepted Answer

The answer of The time required to assemble a part...

Question 18

Which of the following are continuous random variables? I.
The weight of an elephant
II)
The time to answer a questionnaire
III)
The number of floors in a skyscraper
IV)
The square feet of countertop in a kitchen

Accepted Answer

A) I and II only 
B) III and IV only 
C) I,II and IV 
D) I,II,II,and IV 
A) I and II only 
B) III and IV only 
C) I,II and IV 
D) I,II,II,and IV

Question 19

Weight,time,and temperature are examples of discrete random variables.

Accepted Answer

A) True 
 B)False

Question 20

Explain how the binomial distribution could be used in quality control to sample 50 parts in a lot of 500.​

Accepted Answer

The binomial distribution could be used

The binomial probability distribution is most symmetric when

Probabilities for discrete random variables are defined over intervals by a probability density function.

z is a standard normal random variable.The P(z ≥ 2.11)equals

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

For a standard normal distribution,the probability of obtaining a z value of less than 1.6 is

Experimental outcomes that are based on measurement scales such as time,weight,and distance can be described by _____ random variables.

A binomial probability distribution with p = .3 is

Explain the transformation from any normal distribution to the standard normal.

The probability of a continuous variable having a specific value is 0.

A probability density function

An experiment consists of measuring the speed of automobiles on a highway by the use of radar equipment.The random variable in this experiment is speed,measured in miles per hour.This random variable is a

When the exponential distribution probability is given as P(x ≤ 9 )= 1 − e−^9/18 the average value for x is

Scores on an endurance test for cardiac patients are normally distributed with μ = 182 and σ = 24. a.What is the probability a patient will score above 190? b.What percentage of patients score below 170? c.What score does a patient at the 75th percentile receive?

The time required to assemble a part of a machine follows an exponential probability distribution with a mean of 14 minutes. a.What is the probability that the part can be assembled in 7 minutes or less? b.What is the probability that the part can be assembled between 3.5 and 7 minutes?

Which of the following are continuous random variables? I. The weight of an elephant II) The time to answer a questionnaire III) The number of floors in a skyscraper IV) The square feet of countertop in a kitchen

Weight,time,and temperature are examples of discrete random variables.

Explain how the binomial distribution could be used in quality control to sample 50 parts in a lot of 500.

Introduction

Introduction to Probability

Decision Analysis

Utility Game Theory

Time Series Analysis Forecasting

Intro to Linear Programming

LP Sensitivity Analysis

LP Applications

Distribution Network Models

Integer Linear Programming

Advanced Optimization Applications

Project Scheduling

Inventory Models

Waiting Line Models

Simulation

Markov Processes

Filters

Exam 3: Probability Distributions

The binomial probability distribution is most symmetric when

Probabilities for discrete random variables are defined over intervals by a probability density function.

z is a standard normal random variable.The P(z ≥ 2.11)equals

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

For a standard normal distribution,the probability of obtaining a z value of less than 1.6 is​

Experimental outcomes that are based on measurement scales such as time,weight,and distance can be described by _____ random variables.

A binomial probability distribution with p = .3 is

Explain the transformation from any normal distribution to the standard normal.​

The probability of a continuous variable having a specific value is 0.

A probability density function

An experiment consists of measuring the speed of automobiles on a highway by the use of radar equipment.The random variable in this experiment is speed,measured in miles per hour.This random variable is a

When the exponential distribution probability is given as P(x ≤ 9 )= 1 − e−9/18 the average value for x is

Scores on an endurance test for cardiac patients are normally distributed with μ = 182 and σ = 24. a.What is the probability a patient will score above 190? b.What percentage of patients score below 170? c.What score does a patient at the 75th percentile receive?

The time required to assemble a part of a machine follows an exponential probability distribution with a mean of 14 minutes. a.What is the probability that the part can be assembled in 7 minutes or less? b.What is the probability that the part can be assembled between 3.5 and 7 minutes? ​

Which of the following are continuous random variables? I. The weight of an elephant II) The time to answer a questionnaire III) The number of floors in a skyscraper IV) The square feet of countertop in a kitchen

Weight,time,and temperature are examples of discrete random variables.

Explain how the binomial distribution could be used in quality control to sample 50 parts in a lot of 500.​

Introduction

Introduction to Probability

Decision Analysis

Utility Game Theory

Time Series Analysis Forecasting

Intro to Linear Programming

LP Sensitivity Analysis

LP Applications

Distribution Network Models

Integer Linear Programming

Advanced Optimization Applications

Project Scheduling

Inventory Models

Waiting Line Models

Simulation

Markov Processes

Filters

For a standard normal distribution,the probability of obtaining a z value of less than 1.6 is

Explain the transformation from any normal distribution to the standard normal.

When the exponential distribution probability is given as P(x ≤ 9 )= 1 − e−^9/18 the average value for x is

The time required to assemble a part of a machine follows an exponential probability distribution with a mean of 14 minutes. a.What is the probability that the part can be assembled in 7 minutes or less? b.What is the probability that the part can be assembled between 3.5 and 7 minutes?

Explain how the binomial distribution could be used in quality control to sample 50 parts in a lot of 500.