Suppose users share a 3 Mbps link. Also suppose each user requires 150 kbps when transmitting, but each user transmits only 20 percent of the time, suppose packet switching is used and there are 4x225-900 users. 1. Find the probability that the number of users transmitting simultaneously is from 156 to 204 Or P (156< x < 204)-? 2. Find the probability that there are at least 204 users transmitting simultaneously Px> 204)? 3. Find the probability that there are less than 156 users transmitting simultaneously P(x< 156)?