What's the probability you find a bad one within the first 10 you examine?
-
P(at least 1)
= 1 - P(no defects)
= 1 - [10C0 * .02^0 * .98^10]
= 1 - .98^10
= 1 - .81707
= .18293
= 1 - P(no defects)
= 1 - [10C0 * .02^0 * .98^10]
= 1 - .98^10
= 1 - .81707
= .18293