CENGAGENOW FOR ANDERSON/SWEENEY/WILLIAM
13th Edition
ISBN: 9781337094399
Author: Cochran
Publisher: IACCENGAGE
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Textbook Question
Chapter 2, Problem 58SE
A zoo has categorized its visitors into three categories: member, school, and general. The member category refers to visitors who pay an annual fee to support the zoo. Members receive certain benefits such as discounts on merchandise and trips planned by the zoo. The school category includes faculty and students from day care and elementary and secondary schools; these visitors generally receive a discounted rate. The general category includes all other visitors. The zoo has been concerned about a recent drop in attendance. To help better understand attendance and membership, a zoo staff member has collected the following data:
- a. Construct a bar chart of total attendance over time. Comment on any trend in the data.
- b. Construct a side-by-side bar chart showing attendance by visitor category with year as the variable on the horizontal axis.
- c. Comment on what is happening to zoo attendance based on the charts from parts (a) and (b).
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3. A zoo has categorized its visitors into three categories: member, school, and general.
The member category refers to visitors who pay an annual fee to support the zoo.
Members receive certain benefits such as discounts on merchandise and tips planned by
the zoo. The school category includes faculty and students from day care and
elementary and secondary schools; these visitors generally receive a discounted rate.
The general category includes all other visitors. The zoo has been concerned about a
recent drop in attendance. To help better understand attendance and membership, a
zoo staff member has collected the following data:
Visitor Category
General
Member
School
Total
Year 1
Year 2
Year 3
Year 4
153,713
158,704
163,433
169,106
115,523
104,795
98,437
81,217
82,885
79,876
81,970
81,290
352,121
343,375
343,840
331,613
a) Construct a bar chart of total attendance over time. Comment on any trend in the data.
b) Construct a side-by side bar chart showing by visitor category with year…
Reliable Furniture is a family business that has been selling to retail customers in the Oakville area for many years. It advertises extensively on radio and TV, emphasizing their its prices and easy credit terms. The owner would like to review the relationship between sales and the amount spent on advertising. Below is information on sales and advertising expense for the last four months.
Ad Exp.
Sales Rev.
Month
($ in 000)
($ in 000)
July
2
7
August
1
3
September
3
8
October
4
10
a) Determine the regression equation.
b) Interpret the values of a and b.
c) Estimate sales when $3 thousand is spent on advertising. Include the 95% confidence interval for average X
d) Determine the coefficient of correlation.
Chapter 2 Solutions
CENGAGENOW FOR ANDERSON/SWEENEY/WILLIAM
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