Answer
$ŷ =0.522x+116$
P-value $=0.193\gtα$. Do not reject the null hypothesis.
There is not enough evidence to conclude that there is a linear relation between the Zestimate and sale price.
This new observation is influential!
Work Step by Step
In MINITAB, enter the Zestimate values, with the new value (370), in C1 and in C2 enter the Sale Price values, with the new value (150).
Select Stats -> Regression -> Regression -> Fit Regression Model
Enter C2 in "Responses" and C1 in "Continuous Predictors"
The least-squares regression line ($ŷ =b_1x+b_0$) will be shown in "Regression Equation", where C2 is ŷ (Sale Price) and C1 is x (Zestimate)
$ŷ =0.522x+116$
$H_0: β_1=0$ versus $H_1: β\ne0$
See the results obtained in the MINITAB.
P-value $=0.193\gtα$
