Suppose users share a 3 Mbps link. Also suppose each user requires 150 kbps when transmitting, but each user transmits only 10 percent of the time. (See the discussion of packet switching versus circuit switching in textbook)

Suppose there are 120 users. Find the probability that at any given time; exactly n users are transmitting simultaneously, provide a generic form of your expression using n (Hint: Use the binomial distribution.) Now, consider the following values for n: 10, 20, 50, 100. Do you see a trend? Discuss.