Practical Management Science, Loose-leaf Version
5th Edition
ISBN: 9781305631540
Author: WINSTON, Wayne L.; Albright, S. Christian
Publisher: Cengage Learning
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Textbook Question
Chapter 10.2, Problem 1P
Use the RAND function and the Copy command to generate 100 random numbers.
- a. What fraction of the random numbers are smaller than 0.5?
- b. What fraction of the time is a random number less than 0.5 followed by a random number greater than 0.5?
- c. What fraction of the random numbers are larger than 0.8?
- d. Freeze these random numbers. However, instead of pasting them over the original random numbers, paste them onto a new range. Then press the F9 recalculate key. The original random numbers should change, but the pasted copy should remain the same.
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USE: A=20X210
B=10X210
C=12X210
Given a normal distribution with μ= 105 and σ = 20, and given you select a sample of n = 16, complete parts (a)
through (d).
a. What is the probability that X is less than 92?
P(X<92)
0.0047
(Type an integer or decimal rounded to four decimal places as needed.)
b. What is the probability that X is between 92 and 93.5?
P(92 X 93.5)= 0.0061
(Type an integer or decimal rounded to four decimal places as needed.)
c. What is the probability that X is above 105.2?
P(X 105.2)= 0.4840
(Type an integer or decimal rounded to four decimal places as needed.)
d. There is a 67% chance that X is above what value?
X =
(Type an integer or decimal rounded to two decimal places as needed.)
4.1 TYPES OF RANDOM VARIABLES. Which of the following describe continuous random variables? Which describe discrete random variables?
The number of newspapers sold by the New York Times each month
The amount of ink used in printing a Sunday edition of the New York Times
The actual number of ounces in a 1-gallon bottle of laundry detergent
The number of defective parts in a shipment of nuts and bolts
The number of people collecting unemployment insurance each month
Chapter 10 Solutions
Practical Management Science, Loose-leaf Version
Ch. 10.2 - Use the RAND function and the Copy command to...Ch. 10.2 - Use Excels functions (not @RISK) to generate 1000...Ch. 10.2 - Use @RISK to draw a uniform distribution from 400...Ch. 10.2 - Use @RISK to draw a normal distribution with mean...Ch. 10.2 - Use @RISK to draw a triangular distribution with...Ch. 10.2 - Use @RISK to draw a binomial distribution that...Ch. 10.2 - Use @RISK to draw a triangular distribution with...Ch. 10.2 - We all hate to keep track of small change. By...Ch. 10.4 - Prob. 11PCh. 10.4 - In August of the current year, a car dealer is...
Ch. 10.4 - Prob. 13PCh. 10.4 - Prob. 14PCh. 10.4 - Prob. 15PCh. 10.5 - If you add several normally distributed random...Ch. 10.5 - In Problem 11 from the previous section, we stated...Ch. 10.5 - Continuing the previous problem, assume, as in...Ch. 10.5 - In Problem 12 of the previous section, suppose...Ch. 10.5 - Use @RISK to analyze the sweatshirt situation in...Ch. 10.5 - Although the normal distribution is a reasonable...Ch. 10.6 - When you use @RISKs correlation feature to...Ch. 10.6 - Prob. 24PCh. 10.6 - Prob. 25PCh. 10.6 - Prob. 28PCh. 10 - Six months before its annual convention, the...Ch. 10 - Prob. 30PCh. 10 - A new edition of a very popular textbook will be...Ch. 10 - Prob. 32PCh. 10 - W. L. Brown, a direct marketer of womens clothing,...Ch. 10 - Prob. 34PCh. 10 - Lemingtons is trying to determine how many Jean...Ch. 10 - Dilberts Department Store is trying to determine...Ch. 10 - It is surprising (but true) that if 23 people are...Ch. 10 - Prob. 40PCh. 10 - At the beginning of each week, a machine is in one...Ch. 10 - Simulation can be used to illustrate a number of...Ch. 10 - Prob. 43PCh. 10 - Prob. 46PCh. 10 - If you want to replicate the results of a...Ch. 10 - Suppose you simulate a gambling situation where...Ch. 10 - Prob. 49PCh. 10 - Big Hit Video must determine how many copies of a...Ch. 10 - Prob. 51PCh. 10 - Prob. 52PCh. 10 - Why is the RISKCORRMAT function necessary? How...Ch. 10 - Consider the claim that normally distributed...Ch. 10 - Prob. 55PCh. 10 - When you use a RISKSIMTABLE function for a...Ch. 10 - Consider a situation where there is a cost that is...
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