Probability | Accounting homework help

 

A medical laboratory receives 32 blood specimens to check for HIV. Ten actually contain HIV. A worker is accidentally exposed to five specimens.

(a) What is the probability that none contained HIV? (Round your answer to 4 decimal places.)

(b) Fewer than three? (Round your answer to 4 decimal places.)

(c) At least two? (Round your answer to 4 decimal places.)