Assuming the normality assumption is valid, compute a 95% confidence interval for ????0 when (a) ????0 =

Assuming the normality assumption is valid, compute a 95% confidence interval for

????0 when

(a) ˆ????0 = 78.2, ????????(ˆ????0) = 14.5, and ???? = 61.

(b) ˆ????0 = −20.5, ????????(ˆ????0) = 1.05, and ???? = 125.

(c) ˆ????0 = 693.4, ????????(ˆ????0) = 198.0, and ???? = 75.