Question

As concrete​ cures, it gains strength. The following data represent the​ 7-day and​ 28-day strength in

pounds per square inch​ (psi) of a certain type of concrete.

Data:

7-Day_Strength_(psi) x 28-Day_Strength_(psi) y

3330 4850

2620 4190

2300 4070

3380 5020

3390 5220

(A)Treating the​ 7-day strength as the explanatory​ variable, x, use technology to determine the estimates of β0SUMMARY OUTPUT
Regression Statistics
Multiple R
0 9670
R square
0.9351
Adjusted R Square
0.9134
Standard Error
150.587 7
Observations
ANOVA
of
35
MS
significance F
Regression
979770 979770 43. 2061…

Statistics and Probability