Concept explainers
(a)
To graph: The
(a)
Explanation of Solution
Given information:
The number of subscribers
Year | Subscribers, |
Graph:
To graph the points on scatter plot, follow the steps using graphing calculator.
First press the
Go to
Now, press the
Figure (1)
(b)
To find: The linear model for the data with the help of regression of graphing utility.
(b)
Answer to Problem 20E
The linear model for the data is equal to
Explanation of Solution
Given information:
The number of subscribers
Year | Subscribers, |
Calculation:
For the regression linear model of data follow the steps below:
First press the
Go to
Now enter the keystrokes
Figure(2)
Therefore, the linear model for the data is equal to
(c)
To find: The graph of model and the scatter plot of data in same viewing window and check the model is best fit or not.
(c)
Answer to Problem 20E
The model is best fit for the data as all the points of the data lies on the graph of the model.
Explanation of Solution
Given information:
The number of subscribers
Year | Subscribers, |
Calculation:
To graph the points on scatter plot, follow the steps using graphing calculator.
First press the
Go to
Now press the key
Now, press the
Figure (3)
(d)
To find: The number of subscribers in
(d)
Answer to Problem 20E
The number of subscribers in
Explanation of Solution
Given information:
The number of subscribers
Year | Subscribers, |
Calculation:
As found in part(c), the model for the best fit of data is equal to
Substitute
Therefore, the number of subscribers in
The answer to reasonability of the answer depends on the population and it is very big amount so there is less chance of this much subscribers.
Chapter 1 Solutions
EBK PRECALCULUS W/LIMITS:GRAPH.APPROACH
- Calculus: Early TranscendentalsCalculusISBN:9781285741550Author:James StewartPublisher:Cengage LearningThomas' Calculus (14th Edition)CalculusISBN:9780134438986Author:Joel R. Hass, Christopher E. Heil, Maurice D. WeirPublisher:PEARSONCalculus: Early Transcendentals (3rd Edition)CalculusISBN:9780134763644Author:William L. Briggs, Lyle Cochran, Bernard Gillett, Eric SchulzPublisher:PEARSON
- Calculus: Early TranscendentalsCalculusISBN:9781319050740Author:Jon Rogawski, Colin Adams, Robert FranzosaPublisher:W. H. FreemanCalculus: Early Transcendental FunctionsCalculusISBN:9781337552516Author:Ron Larson, Bruce H. EdwardsPublisher:Cengage Learning