Essentials of Statistics for The Behavioral Sciences (MindTap Course List)
Essentials of Statistics for The Behavioral Sciences (MindTap Course List)
9th Edition
ISBN: 9781337098120
Author: Frederick J Gravetter, Larry B. Wallnau, Lori-Ann B. Forzano
Publisher: Cengage Learning
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Textbook Question
Chapter 2, Problem 19P

A local fast-food restaurant normally sells coffee in three sizes- small, medium, and large-at three different prices. Recently they had a special sale, charging only SI for any sized coffee. During the sale, an employee recorded the number of each coffee size that was purchased on Wednesday morning. The following Wednesday, when prices had returned to normal, she again recorded the number of coffees sold for each Size. The results are shown in the following table.

Regular Prices
x f
Large 12
Medium 25
Small 31
All Sizes for $1
X f
Large 41
Medium 27
Small 11
  1. a. What kind of graph would be appropriate for showing the distribution of coffee sizes for each of the two time periods?
  2. b. Draw the two frequency distribution graphs.
  3. c. Based on your two graphs, did the sale have an influence on the size of coffee that customers ordered?
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Chapter 2 Solutions

Essentials of Statistics for The Behavioral Sciences (MindTap Course List)

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