1. Pate's Pharmacy, Inc. operates a regional chain of 120 pharmacies. Each pharmacy's floor
plan includes a greeting card department which is relatively isolated. Sandra Royo, Marketing
Manager, feels
THE NATURAL GAS CONSUMPTION CASE
Consider the situation in which a gas company wishes to predict weekly natural gas consumption
for its city. In the exercises of Chapter 13, we used the single predict
Suppose that the random variable x has a uniform distribution with c = 2 and d = 8.
a.Write the formula for the probability curve of x, and write an interval that gives the
possible values of x.
b.Fin
1. Suppose that the random variable x has an exponential distribution with = 2.
a. Write the formula for the exponential probability curve of x. What are the possible
values of x?
b. Find P(x 1).
c. F
1. Suppose that x has a binomial distribution with n = 200 and p = .4.
a. Show that the normal approximation to the binomial can appropriately be used to
calculate probabilities about x.
b. Make conti
In the book Essentials of Marketing Research, William R. Dillon, Thomas J. Madden, and Neil
H. Firtle present the results of a concept study for a new wine cooler. Three hundred consumers
between 21 a
BUS 223 Exam 6 Chapters 13-14
1. A cost accountant is developing a regression model to predict the total cost of producing a
batch of printed circuit boards as a linear function of batch size (the num
Counting Rules
Fundamental Counting Rule: for a sequence of 2
events in which the first can occur in m ways and the
second event can occur n ways, the events together
can occur a total of
ways.
Factor
32FundamentalsofProbability
ThecomplementofeventA,denoted,consistsofalloutcomesinwhicheventAdoesnot
occurwhere.
Roundingoffprobabilities:eithergivetheexactfractionordecimalorroundoffresultstothree
sig
Multiplication Rule
When randomly selecting more than one subject,
equals
alsoP(AB)
when A and B are independent or
withreplacement
when A and B are dependent.
withoutreplacement
ConditionalProbabilit
Addition Rule
AandB
A
B
NOtMutuallyExclusiveEvents
A
B
MutuallyExclusiveEvents
EX1
What is the probability that the last digit
of a telephone number is
a. P(8 or 9).
b. P(odd or less than 4).
EX2
From
Rounding off probabilities: either give the exact fraction or
decimal or round results to three significant digits.
EX1
On an ACT test, a typical question has 5 possible
answers. If an examinee makes