Reaction Time Is Measured in a Driving Simulator for a Random

Multiple Choice

Reaction time is measured in a driving simulator for a random sample of 16 year-old boys (n = 12, $\overline{x}$ = 4.5,s = 1.1) and a random sample of 24 year-old young men (n = 9, $\overline{x}$ = 2.9, s = 1.3) . Calculate a 99% pooled confidence interval for the difference in mean reaction time (16 year-olds - 24 year-olds) .

A) (0.48, 2.72)
B) (0.51, 2.70)
C) (0.07, 3.13)
D) None of the above