A manufactures of stoves has to buy oven lights from two different because one company cannot meet its demand. The manufacture purchase 60% of the oven lights from company A and the rest from Company B. Past experience shows that 1% of the company’s A’s oven lights are defected and 2.5% of Company’s B lights are defected. Determine the probability that a defective oven light is supplied by company A.
aaaaaaaaaaaaaa I cant get this question to work!!!!
Hello, justin!
Jhevon is right . . . the 60-40 must be included in the problem.
. . and I have a different answer . . .
A maker of stoves has to buy oven lights from two different companies.
The maker buys 60% of the oven lights from company A and the rest from Company B.
Past experience shows that 1% of the company’s A’s oven lights are defective
and 2.5% of Company’s B's lights are defective.
Determine the probability that a defective oven light is supplied by company A.
Suppose 1000 lights are ordered: 600 from company A and 400 from company B.
Since A's light are 1% defective, we can expect: . defective lights in the order.
Since B's lights are 2.5% defective, we can expect: . defectives.
In the order, there are 16 defective light ... and 6 are from company A.
Therefore: .