
Concept explainers
a.
The solution of the least square regression line for the data.
a.

Answer to Problem 57E
Explanation of Solution
Given information:
An agriculture scientist used four test plot to determine the relationship between wheat yield
Calculation:
The system of the equations are:
To find the least squares regression line
Multiplying the first equation by
Find the value of
Substitute the value of
Thus, the solution is
b.
The demand by using the linear model from part (a).
b.

Answer to Problem 57E
Explanation of Solution
Given information:
An agriculture scientist used four test plot to determine the relationship between wheat yield
Calculation:
By using the linear model from the part (a) to find the value of
Firstly convert the pounds to bushels:
Therefore, the solution is
Chapter 7 Solutions
Precalculus with Limits
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