Answer:
d. Slope = 0.35
y-intercept = 10.9
Step-by-step explanation:
The computation is shown below:
Data given in the question
Mean = 8.2
The standard deviation of x = = 1.92
Mean = 13.8
The standard deviation of y = = 3.03
The correlation = r = 0.223
Based on the above information,
As we know that
The slope is
= 0.3519
Now the y-intercept is
= 13.8 - (0.351922) 8.2
= 13.8 - 2.88579
= 10.91