Mathematics: A Practical Odyssey
8th Edition
ISBN: 9781305104174
Author: David B. Johnson, Thomas A. Mowry
Publisher: Cengage Learning
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Chapter 11.2, Problem 20E
To determine
To Find:
The reason for describing a Markov chain in the given data.
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2.6 Global credit cards. There are currently six global credit
card companies that allow worldwide usage-Visa, Mastercard,
American Express, UnionPay, JCB, and Discover. The table
gives a breakdown on the number of purchase transactions
for each company in 2018.
GLOBALCC
Credit Card
Visa
Mastercard
American Express
UnionPay
JCB
Discover
Number of Worldwide
Transactions (billions)
147.9
75.8
7.5
58.6
3.4
2.5
Source: The Nilson Report, January 2, 2020
a. One of the worldwide credit card transactions in 2018
is selected at random, and the credit card company is
determined. What type of data (quantitative or qualita-
tive) is measured?
b. For each credit card company in the table, calculate the
percentage of the 2018 worldwide transactions.
c. Use the percentages from part b to construct a relative
frequency bar graph for the data summarized in the table.
d. Based on the bar graph, make a statement about the
most used credit cards worldwide.
Suppose that you have 60 volunteers (30 Males and 30 Females) who are currently not in a relationship but wish to be so. Design a study (Make a block diagram) to answer the question: ”Does the new dating app help one find a more compatible match than no dating app?”
StarHortons Cup, the coffee company, wants to determine how long caffeine lasts throughout the day when individuals have a cup of one of their 3 types of coffee at 9am. They will then measure the levels of caffeine in these individuals’ systems at 10am, 12am, 2pm, 4pm, 6pm and 8pm. They want to have at least 20 observations per group. How many separate/distinct groups of participants are needed if they want to conduct this experiment using a mixed-measures ANOVA?
18
6
20
3
Chapter 11 Solutions
Mathematics: A Practical Odyssey
Ch. 11.0A - In Exercises 1-10, a find the dimensions of the...Ch. 11.0A - Prob. 2ECh. 11.0A - Prob. 3ECh. 11.0A - Prob. 4ECh. 11.0A - Prob. 5ECh. 11.0A - Prob. 6ECh. 11.0A - Prob. 7ECh. 11.0A - Prob. 8ECh. 11.0A - Prob. 9ECh. 11.0A - In Exercises 1-10, a find the dimensions of the...
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