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.

7-Day_Strength_(psi)_-_x   28-Day_Strength_(psi)_-_y
2300   4070
3380   5020
2620   4190
3390   5220
3330   4850

​(a) Treating the​ 7-day strength as the explanatory​ variable, x, use technology to determine the estimates of β0 and β1.

β0≈b0=1753.9​

(Round to one decimal place as​ needed.)

β1≈b1=0.9707

​(Round to four decimal places as​ needed.)

Se=__?__

​(Round to one decimal place as​ needed.)

Answer 1