According to a study done by researchers at Georgetown University, recent college graduates who majored in architecture have the highest unemployment rate, at 13.9%. Arts majors are next, with an 11.1% unemployment rate for recent graduates. Recent graduates are defned as eligible workers between the ages of 22 and 26. In a random sample of 200 recent architecture graduates, compute the

a. Expected number of grads who are unemployed.

b. Variance of the random variable “number of grads who are unemployed .”

c. Standard deviation of the random variable “number of grads who are unemployed.”