4.) Connection attempts made to a fault},F webserver are successful with probability 0.35. Each connection attempt is independent of the others. {:1} Compute the mean and variance of the number of attempts until the fth failed connection. (b)- Compute the probabilityr that the third failed connection occurs on the sixth attempt. (c) Compute the probability.r that the fourth successful connection occurs after the fth attempt. {(1} Suppose that twelve connection attempts are made in a single hour. Compute the probability that more than ten attempts are successful