A binomial event has n = 20 trials. The probability of success for each trial is 0.20. Let x be the number of successes of the event during the 20 trials. What are wx and ox?
a. μx = 4 and σx = 1.79
b. μx = 16 and σx = 2.28
c. μx = 1.79 and σx = 4
d. μx = 2.28 and σx = 16
