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As concretecures, it gains strength. The following data represent the7-day and28-day strength in pounds per square inch(psi) of a certain type of concrete. 7-Day Strength(psi),
As concretecures, it gains strength. The following data represent the7-day and28-day strength in pounds per square inch(psi) of a certain type of concrete.
7-Day Strength(psi), x
3390
2620
3380
3330
2300
28-Day Strength(psi), y
5220
4190
5020
4850
4070
(a) Treating the7-day strength as the explanatoryvariable, x, use technology to determine the estimates of 0 and 1.
0b0=
(Round to one decimal place asneeded.)
1b1=
(Round to four decimal places asneeded.)
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