Concept explainers
a.
To Confirm: The given linear model is appropriate.
The given model is linear.
Given:
Calculation:
Press
Select required type, then press
Select Mark as
Press
Enter the data from the above table in the columns
Select the WINDOW as
Then press
The scatter plot is shown below:
Thus, the given model is appropriately linear.
b.
To Determine: The linear regression model.
The linear regression model is
Given:
Calculation:
Assume the regression model be
Here,
Substitute data for first
Subtract the above two equations and get,
Substitute the value of
Thus, the relation is:
c.
To Predict: The median U.S. female income in
The median U.S. female income in
Given:
Calculation:
Predict the median U.S. female income in
To predict the compensation for the year
Now, substitute
Thus, the female income in the year
Chapter 2 Solutions
PRECALCULUS:...COMMON CORE ED.-W/ACCESS
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