Given X ~ U(2,18), we survey forty at a time and are interested in the distribution of X-bar. The standard deviation of X-bar is: a) 1.5811
b) 0.1155
c) 0.7303
d) 4.62

Given X ~ U(2,18), we survey forty at a time and are interested in the distribution of X-bar. P(2 < X < 18) is P(2 < X-bar < 18)
a) less than
b) equal to
c) greater than
d) at most