Question 1

If one wanted to find the probability of ten customer arrivals in an hour at a service station, one would generally use the

Accepted Answer

A) binomial probability distribution 
B) Poisson probability distribution 
C) hypergeometric probability distribution 
D) exponential probability distribution 
A) binomial probability distribution 
B) Poisson probability distribution 
C) hypergeometric probability distribution 
D) exponential probability distribution

Question 2

Exhibit 5-7
A sample of 2,500 people was asked how many cups of coffee they drink in the morning. You are given the following sample information.  
-The binomial probability distribution is used with

Accepted Answer

A) a continuous random variable 
B) a discrete random variable 
C) any distribution, as long as it is not normal 
D) All of these answers are correct. 
A) a continuous random variable 
B) a discrete random variable 
C) any distribution, as long as it is not normal 
D) All of these answers are correct.

Question 3

Exhibit 5-11
The random variable x is the number of occurrences of an event over an interval of ten minutes. It can be assumed that the probability of an occurrence is the same in any two time periods of an equal length. It is known that the mean number of occurrences in ten minutes is 5.3.
-Refer to Exhibit 5-11. The appropriate probability distribution for the random variable is

Accepted Answer

A) discrete 
B) continuous 
C) either a or b depending on how the interval is defined 
D) not enough information is given 
A) discrete 
B) continuous 
C) either a or b depending on how the interval is defined 
D) not enough information is given

Question 4

Exhibit 5-4
A local bottling company has determined the number of machine breakdowns per month and their respective probabilities as shown below.  
-Refer to Exhibit 5-4. The expected number of machine breakdowns per month is

Accepted Answer

A) 2 
B) 1.70 
C) one 
D) None of the alternative answers is correct. 
A) 2 
B) 1.70 
C) one 
D) None of the alternative answers is correct.

Question 5

The demand for a product varies from month to month. Based on the past year's data, the following probability distribution shows MNM company's monthly demand.   
a.Determine the expected number of units demanded per month.
b.Each unit produced costs the company $8.00, and is sold for $10.00. How much will the company gain or lose in a month if they stock the expected number of units demanded, but sell 2000 units?

Accepted Answer

a.2300
b.P

Question 6

The average number of calls received by a switchboard in a 30-minute period is 15.
a.Define the random variable in words for this experiment.
b.What is the probability that between 10:00 and 10:30 the switchboard will receive exactly 10 calls?
c.What is the probability that between 10:00 and 10:30 the switchboard will receive more than 9 calls but fewer than 15 calls?
d.What is the probability that between 10:00 and 10:30 the switchboard will receive fewer than 7 calls?

Accepted Answer

a.x = the number of

Question 7

A company sells its products to wholesalers in batches of 1,000 units only. The daily demand for its product and the respective probabilities are given below.   
a.Determine the expected daily demand.
b.Assume that the company sells its product at $3.75 per unit. What is the expected daily revenue?

Accepted Answer

The answer of A company sells its products to wholesalers...

Question 8

Exhibit 5-1
The following represents the probability distribution for the daily demand of microcomputers at a local store.  
-Refer to Exhibit 5-1. The expected daily demand is

Accepted Answer

A) 1.0 
B) 2.2 
C) 2 
D) 4 
A) 1.0 
B) 2.2 
C) 2 
D) 4

Question 9

Exhibit 5-7
A sample of 2,500 people was asked how many cups of coffee they drink in the morning. You are given the following sample information.  
-Which of the following is a characteristic of a binomial experiment?

Accepted Answer

A) at least 2 outcomes are possible 
B) the probability of success changes from trial to trial 
C) the trials are independent 
D) All of these answers are correct. 
A) at least 2 outcomes are possible 
B) the probability of success changes from trial to trial 
C) the trials are independent 
D) All of these answers are correct.

Question 10

Exhibit 5-7
A sample of 2,500 people was asked how many cups of coffee they drink in the morning. You are given the following sample information.  
-Which of the following is not a property of a binomial experiment?

Accepted Answer

A) the experiment consists of a sequence of n identical trials 
B) each outcome can be referred to as a success or a failure 
C) the probabilities of the two outcomes can change from one trial to the next 
D) the trials are independent 
A) the experiment consists of a sequence of n identical trials 
B) each outcome can be referred to as a success or a failure 
C) the probabilities of the two outcomes can change from one trial to the next 
D) the trials are independent

If one wanted to find the probability of ten customer arrivals in an hour at a service station, one would generally use the

Exhibit 5-7 A sample of 2,500 people was asked how many cups of coffee they drink in the morning. You are given the following sample information. -The binomial probability distribution is used with

Exhibit 5-4 A local bottling company has determined the number of machine breakdowns per month and their respective probabilities as shown below. -Refer to Exhibit 5-4. The expected number of machine breakdowns per month is

A company sells its products to wholesalers in batches of 1,000 units only. The daily demand for its product and the respective probabilities are given below. a.Determine the expected daily demand. b.Assume that the company sells its product at $3.75 per unit. What is the expected daily revenue?

Exhibit 5-1 The following represents the probability distribution for the daily demand of microcomputers at a local store. -Refer to Exhibit 5-1. The expected daily demand is

Exhibit 5-7 A sample of 2,500 people was asked how many cups of coffee they drink in the morning. You are given the following sample information. -Which of the following is a characteristic of a binomial experiment?

Exhibit 5-7 A sample of 2,500 people was asked how many cups of coffee they drink in the morning. You are given the following sample information. -Which of the following is not a property of a binomial experiment?

Data and Statistics

Descriptive Statistics: Tabular and Graphical Displays

Descriptive Statistics: Numerical Measures

Introduction to Probability

Continuous Probability Distributions

Sampling and Sampling Distributions

Interval Estimation

Hypothesis Tests

Inference About Means and Proportions With Two Populations

Inferences About Population Variances

Tests of Goodness of Fit, Independence and Multiple Proportions

Experimental Design and Analysis of Variance

Simple Linear Regression

Multiple Regression

Regression Analysis: Model Building

Time Series Analysis and Forecasting

Nonparametric Methods

Statistical Methods for Quality Control

Decision Analysis

Sample Survey

Filters

Exam 5: Discrete Probability Distributions

If one wanted to find the probability of ten customer arrivals in an hour at a service station, one would generally use the

Exhibit 5-7 A sample of 2,500 people was asked how many cups of coffee they drink in the morning. You are given the following sample information. -The binomial probability distribution is used with

Exhibit 5-4 A local bottling company has determined the number of machine breakdowns per month and their respective probabilities as shown below. -Refer to Exhibit 5-4. The expected number of machine breakdowns per month is

A company sells its products to wholesalers in batches of 1,000 units only. The daily demand for its product and the respective probabilities are given below. a.Determine the expected daily demand. b.Assume that the company sells its product at $3.75 per unit. What is the expected daily revenue?

Exhibit 5-1 The following represents the probability distribution for the daily demand of microcomputers at a local store. -Refer to Exhibit 5-1. The expected daily demand is

Exhibit 5-7 A sample of 2,500 people was asked how many cups of coffee they drink in the morning. You are given the following sample information. -Which of the following is a characteristic of a binomial experiment?

Exhibit 5-7 A sample of 2,500 people was asked how many cups of coffee they drink in the morning. You are given the following sample information. -Which of the following is not a property of a binomial experiment?

Data and Statistics

Descriptive Statistics: Tabular and Graphical Displays

Descriptive Statistics: Numerical Measures

Introduction to Probability

Continuous Probability Distributions

Sampling and Sampling Distributions

Interval Estimation

Hypothesis Tests

Inference About Means and Proportions With Two Populations

Inferences About Population Variances

Tests of Goodness of Fit, Independence and Multiple Proportions

Experimental Design and Analysis of Variance

Simple Linear Regression

Multiple Regression

Regression Analysis: Model Building

Time Series Analysis and Forecasting

Nonparametric Methods

Statistical Methods for Quality Control

Decision Analysis

Sample Survey

Filters