Question

a batch of 40 parts contains 5 defects. If two parts are drawn randomly one at a time without replacement, what is the probability that both parts are defective? B. If this experiment is repeated, with replacement, what is the probability that both parts are defective?

Answer 1

Answer:

Step-by-step explanations:

For without replacement

Probality is 5/40*4/39

For replacement

Probality is 5/40*5/40