Concept explainers
a.
To find: an equation of the line of best fit using graphing calculator.
a.
Answer to Problem 11CT
Explanation of Solution
Given information: The table shows the amount x (in dollars) spent on advertising for a
neighborhood festival and the attendance y of the festival for several years.
Advertising
(dollars), x | 500 | 1000 | 1500 | 2000 | 2500 | 3000 | 3500 | 4000 |
Yearly
Attendance, y | 400 | 550 | 550 | 800 | 650 | 800 | 1050 | 1100 |
Calculation:
Using the graphing utility on the table data, the linear model is:
b.
To identify: and interpret the
b.
Answer to Problem 11CT
The
Explanation of Solution
Given information:
Calculation:
The linear model on the table data is:
The correlation coefficient is 0.9426 which is close to 1, which means that the linear model is a good fit of data.
c.
To find: what would expect the
c.
Answer to Problem 11CT
Since the model is a good fit, then the points are evenly dispersed about the horizontal axis.
Explanation of Solution
Given information:
Calculation:
Since the model is a good fit, then the points are evenly dispersed about the horizontal axis.
d.
To find: is there a causal relationship in the data, explain.
d.
Answer to Problem 11CT
Yes, the more advertisement are made, the more people will know and therefore attend the festival.
Explanation of Solution
Given information:
Calculation:
Yes, the more advertisement are made, the more people will know and therefore attend the festival.
e.
To predict: the amount that must be spent on advertising to get 2000 people to attend the festival.
e.
Answer to Problem 11CT
The amount that must be spent on advertising to get 2000 people ,
Explanation of Solution
Given information:
Calculation:
Chapter 4 Solutions
BIG IDEAS MATH Integrated Math 1: Student Edition 2016
- Discrete Mathematics and Its Applications ( 8th I...MathISBN:9781259676512Author:Kenneth H RosenPublisher:McGraw-Hill EducationMathematics for Elementary Teachers with Activiti...MathISBN:9780134392790Author:Beckmann, SybillaPublisher:PEARSON
- Thinking Mathematically (7th Edition)MathISBN:9780134683713Author:Robert F. BlitzerPublisher:PEARSONDiscrete Mathematics With ApplicationsMathISBN:9781337694193Author:EPP, Susanna S.Publisher:Cengage Learning,Pathways To Math Literacy (looseleaf)MathISBN:9781259985607Author:David Sobecki Professor, Brian A. MercerPublisher:McGraw-Hill Education