(1) Consider a device comprised of 20 components. There is a 10 % chance that any one component will break. Draw a formula for the P. of the number...

(1) Consider a device comprised of 20 components. There is a 10 % chance

that any one component will break. Draw a formula for the P.D.F. of the

number of components (out of 20) that will not break.

(2) Referring to the above problem, compute the probability that 8 components

will not break.

(3) Referring to the above problem, compute the average number of compo-

nents that will not break.