margot is studying the yield of bushels of wheat in comparison to the amount of rainfall, in inches, that…

Answer:

A. 0.78

Explanation:

Step1: Identify the slope - intercept form

The linear regression equation is $y = 47.3+0.78x$, which is in the form $y = mx + b$ where $m$ is the slope and $b$ is the y - intercept.

Step2: Understand the meaning of the slope

In a linear relationship $y=mx + b$, the slope $m$ represents the change in $y$ for a unit change in $x$. Here, $y$ is the yield of wheat and $x$ is the amount of rainfall. The slope $m = 0.78$. So, for an additional 1 inch of rain (a unit change in $x$), the change in the yield of wheat (change in $y$) is 0.78 bushels.