Question

Can some one explain how to solve this?

Answer 1

This sucks but here we go.

Answer 2

chance of failing 0.17, so chance of success is .83

Answer 3

To answer part a and b I would like to know their definition of unusual. Probably wouldn't be unusual that one would fail. But the probablility that both fail is 0.17*0.17

Answer 4

part b. The probability that the system succeeds. It says only one needs to work for it to succeed. So this is one minus the probaility that both fail. So 1-(.17*.17)

Answer 5

The last one we can setup an equation that is very similar to what we just did in part b.

Answer 6

1-(.17)^2 where there is 2 components. that is what we did in part b

Answer 7

1-(.17)^n = .9999 solve for n which is number of components

Answer 8

Did you understand everything?

Answer 9

ok so part a is no?