# Thread: probability of defects in computers

1. ## probability of defects in computers

Hi!
I am not very good at probability. Maybe because I was not able to attend some lessons.

The topics that was covered in those lessons was The full probability and Bayes formula and independent repeated attempts.

Quality control department of a computer firm received 16 computers. In every of them the probability to find a defect is 0,08.
What is the probability, that

a)the defect was found in all computers
b)the defect was found in exactly 3 computers
c)the defect was found in at least 2 computers

Thanks for help.

2. ## Re: probability of defects in computers

Originally Posted by Kiiefers
Quality control department of a computer firm received 16 computers. In every of them the probability to find a defect is 0,08.
What is the probability, that
a)the defect was found in all computers
b)the defect was found in exactly 3 computers
c)the defect was found in at least 2 computers.
Why don't you at least show some effort.
All you do is post a list of questions.
And you tell that you don't or cannot attend lecture sessions?
WHY? Are we expected to offer you a tutorial?

3. ## Re: probability of defects in computers

Why don't you at least show some effort.
All you do is post a list of questions.
And you tell that you don't or cannot attend lecture sessions?
WHY? Are we expected to offer you a tutorial?

Hi!

I was not able to attend lectures, because I had my own issues I am not going to discuss here.

I have lecture materials and I wil try to solve those questions.

I just put the questions here to receive answers more quickly so when I have problems I can take a look at answrs here, because I have to do this homework till tomorrow evening.