Supplemental Exercises at end of chapter 1
7, p. 26
The Ritz-Carlton Hotel used a customer opinion questionnaire to obtain performance data about its
dining and entertainment services (The Ritz-Carlton Hotel, Naples, Florida, February 2006).
Customers wer
Sample Problems for Chapter 4
3, p 173
How many permutations of three items can be selected from a group of six? Use the letters A, B, C,
D, E, and F to identify the items, and list each of the permutations of items B, D, and F.
= = 120
BDF
BFD
DBF
DFB
FB
Sample Problems for Chapter 5
7, p. 216
The probability distribution for the random variable x follows.
x
f(x)
20
25
30
35
.20
.15
.25
.40
a. Is this probability distribution valid? Explain.
Yes. The probabilities are all between 0 and 1.0 and they add to
Sample Problems for Chapter 2
7, p. 46
The Canmark Research Center Airport Customer Satisfaction Survey uses an online questionnaire to
provide airlines and airports with customer satisfaction ratings for all aspects of the customers flight
experience (Ai
Sample Problems for Chapter 7
9, p. 296
A simple random sample of 5 months of sales data provided the following information:
Month:
1
2
3
4
5
Units Sold:
94
100
85
94
92
a. Develop a point estimate of the population mean number of units sold per month.
=
Sample Problems for Chapter 9
1, p. 370
The manager of the Danvers-Hilton Resort Hotel stated that the mean guest bill for a weekend is $600
or less. A member of the hotels accounting staff noticed that the total charges for guest bills have been
increasi
Sample Problems for Chapter 8
1, p. 332
A simple random sample of 40 items resulted in a sample mean of 25. The population standard
deviation is = 5.
a. What is the standard error of the mean, ?
= 0.79
b. At 95% confidence, what is the margin of error?
=
summarize in your own opinion the course of European history in the twentieth century
Was the Second World War inevitable?
What implications and consequences were there in the aftermath of the Second World War and
Holocaust? How did these events shape hum
Sample Problems for Chapter 3
5, p. 108
The Dow Jones Travel Index reported what business travelers pay for hotel rooms per night in major
U.S. cities (The Wall Street Journal, January 16, 2004). The average hotel room rates for 20 cities are
as follows: