georges asked five of his friends how long they studied for the last math test and what grade they received…

georges asked five of his friends how long they studied for the last math test and what grade they received. he found a linear regression equation for the data to be y = 9.6x + 65.8. what does the 65.8 mean in the context of this equation? a if they studied 0 hours they would earn a 65.8. b the lowest grade of his five friends was a 65.8. c the lowest grade they could receive on the test was a 65.8. d for every hour they studied their grade would go up 65.8 points.

georges asked five of his friends how long they studied for the last math test and what grade they received. he found a linear regression equation for the data to be y = 9.6x + 65.8. what does the 65.8 mean in the context of this equation? a if they studied 0 hours they would earn a 65.8. b the lowest grade of his five friends was a 65.8. c the lowest grade they could receive on the test was a 65.8. d for every hour they studied their grade would go up 65.8 points.

Answer

Answer:

A. If they studied 0 hours they would earn a 65.8.

Explanation:

Step1: Recall linear - regression form

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

Step2: Analyze the y - intercept

In the equation $y = 9.6x+65.8$, when $x = 0$ (hours of study), $y=65.8$. So 65.8 is the grade when the number of study hours is 0.