The n candidates for a job have been ranked 1, 2, 3, …, n. let x = the rank of a randomly selected candidate, so that x has the following:
p(x = 1/n x=1,2,
0 otherwise
a compute e(x.
there is a part b i will post serperately

Prism m and pyramid n have the same base area and the same height. cylinder p and prism q have the same height and the same base perimeter. cone z has the same base area as cylinder y, but its height is three times the height of cylinder y. the figures and have the same volume.