You needed a supplier that could provide parts as close to 76.8 inches in length as possible. You receive four contracts, each with a promised level of accuracy in the parts supplied. Which of these four would you be most likely to accept? a) Mean of 76.8 with a 95% confidence interval of 76.6 to 77.0
b) Mean of 76.800 with a 99% confidence interval of 76.5 to 77.1
c) Mean of 76.8 with a 99% confidence interval of 76.6 to 77.0
d) Mean of 76.800 with a 90% confidence interval of 76.6 to 77.0