A binomial event has n = 50 trials. The probability of success for each trial is 0. 60. Let x be the number of successes of the event during the 50 trials. What are μx and σx? 30 and 3. 4641 30 and 5. 4772 20 and 3. 4641 20 and 5. 4772 50 and 3. 4641