Defect rate

A manufacturing machine has a 3% defect rate.

If 9 items are chosen at random, what is the probability that at least one will have a defect?

Correct answer:

p =  0.2398

Step-by-step explanation:

r=3%=1003=0.03  p0=(09)r0(1r)90=(09)0.030(10.03)90=10.0300.9790.7602  p=1p0=10.7602=0.2398

Did you find an error or inaccuracy? Feel free to write us. Thank you!

Tips for related online calculators
Looking for a statistical calculator?
Our percentage calculator will help you quickly calculate various typical tasks with percentages.
Would you like to compute the count of combinations?

You need to know the following knowledge to solve this word math problem:

Related math problems and questions: