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 225 users.

Note: As we did in class use the Binomial to Normal distribution approximations (and the empirical rules µ±1? =0.6826, µ ±2? =0.9544, µ ±3? =0.9973)

Find the probability that the number of users transmitting simultaneously is from 57 to 63.?

Classify the following triangle check all that apply

Suppose that 3% of all athletes are using the endurance-enhancing hormone epo (you should be able to simply compute the percentage of all athletes that are not using epo). for our purposes, a “positive” test result is one that indicates presence of epo in an athlete’s bloodstream. the probability of a positive result, given the presence of epo is .99. the probability of a negative result, when epo is not present, is .90. what is the probability that a randomly selected athlete tests positive for epo? 0.0297

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