According to the survey 88 % of major US companies electronically monitor their employees. Assume that 485 such companies are chosen independently and at random.
(a) Determine the probability that 427 companies in the sample electronically monitor their employees? (Select answer from below and please clarify work)
P ( -20.331 < Z < 47.439 )
P ( -0.042 < Z < 0.098 )
0
0.5
P( -0.004 < Z < 0.010 )
(b) Compute the probability that at most 436 companies in the sample electronically monitor their employees? (Select from below and clarify work please)
P( Z > 1.355 )
P( Z > 1.286 )
P( Z > 1.216 )
P( Z < 1.216 )
P( Z < 1.355 )