Respuesta :
Answer:
0.019 or 1.9%
Step-by-step explanation:
Let U = Union member
N= Non union member
Let the probability of U ; P(U)= 0.94
P(N) = 0.06
Sample size = 4
Outcomes = 2 i.e either Union or Non-Union
Total possible outcomes= 4²
= 16
Total Possible outcomes is shown below
1st member 2nd member 3rd member 4th member
U U U U
U U U N
U U N U
U U N N
U N U U
U N U N
U N N U
U N N N
N U U U
N U U N
N U N U
N U N N
N N U U
N N U N
N N N U
N N N N
P( exactly two (2) workers are union members )
= P(UUNN) + P (UNUN) + P (UNNU) + P (NUUN) + P (NUNU) + P (NNUU)
= 6 x P(UUNN)
= 6 x (0.94 x0.94 x0.06 x0.06)
= 0.01908576
≈ 0.019 or 1.9%