# statistics

posted by
**Anonymous**
.

Suppose that 8% of a certain batch of calculators have a defective case, 11% have

defective batteries, and 3% have both of these problems. Construct the probability distribution

table (categories are defective case/non-defective case, and defective batteries/non-defective

batteries). Find the probability that a calculator has

(a) A defective case or defective batteries.

(b) A defective case and good batteries.

(c) Defective batteries, given the case is good.

(d) Is having a defective case independent from having defective batteries?