Question

A lot has 10% defective items. Ten items are chosen randomly from this lot. The probability that exactly 2 of the chosen items are defective is

Answer 1

Answer:

0.1937

Step-by-step explanation:

probability of defective item is given by

p= 0.1

probability of non-defective item is given by q=1-0.1

q = 0.9

the probability that exactly 2 of the chosen items are defective is given by,

use the formula

= nCx.p^x.q^(n-x)

the next steps are explained in picture.

the answer is 0.1937