The phone lines to an airline reservation system are occupied 40% of the time. Assume theevents that the lines are occupied on successive calls are independent. Assume that 10 calls areplaced to the airline. Let Xbe the number of lines that are occupied.
a. What is the name of the probability distribution of X? Obtain the pdf and the cdf tables for this distribution.
b. What is the mean of this distribution?
c. What is the standard deviation of this distribution?