Question

Select the correct answer.
There is a 20% probability that a person inoculated with a particular vaccine will get the disease anyway. A county health office inoculates 83 people. What is the probability that exactly 10 of them will get the disease at some point in their lives?

A.
0.0202

B.
0.0210

C.
0.0412

D.
0.9587

Answer 1

P(X = 10) = C(83,10) (0.2)^10 (0.8)^73 ≈ 0.0210.

So the correct answer is B.