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1 point A random number N of jobs are to be processed one at a time on a single processor. The processing time of each of the i jobs has mean 1 , independent of N. The number of jobs N has a geometric distribution with parameter 1/2. What is the expected value of the total processing time? Type your answer... 1 point A stream of bits is transmitted over a communications channel. Each bit, independently of the others, is received in error with probability p. What are the mean and variance of the number of errors in the first n transmissions? np,np(1p)np,np2np,n2(1p))n(1p),np(1p) None of the other choices