Answer
$β_0=2676$
$β_1=0.676$
Work Step by Step
In MINITAB, enter the 7-day strength values in C1 and in C2 enter the 28-day strength values.
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 (28-day strength) and C1 is x (7-day strength)
$ŷ =2676 + 0.676x$
That is:
$b_0=2676$ and $b_1=0.676$
$b_0$ is the estimate for $β_0$ and $b_1$ is the estimate for $β_1$.
