1)A machine produces bolts which are put in boxes. It is known that 1 box in 10 will have at least one defective bolt in it. Assuming that the boxes are independent of eachother, what is the probability that a customer that ordered 3 boxes will get all good bolts?
2.) Suppose that 4% of males are color blind, that 1% of females are color blind, and that males and females make up 50% of the population. If a person ios chosen at random, what is the probability that this person will be color blind?
Thanks
2006-11-12 07:17:46 · 3 answers · asked by PC 1 in Science & Mathematics ➔ Mathematics
The first is 0.9X0.9X0.9, and the second is 2.5%
2006-11-12 07:23:45 · answer #1 · answered by Sciencenut 7 · 0⤊ 0⤋
1. P = (9/10)^3 = 0.729
2. P = 0.5(0.04 + 0.01) = 0.025
2006-11-12 15:20:01 · answer #2 · answered by jacinablackbox 4 · 0⤊ 0⤋
do your own homework or you will never learn anything
2006-11-12 15:21:16 · answer #3 · answered by ʎɓʎzʎs 3 · 1⤊ 1⤋