Question

A quality control inspector rejects 40% of a certain product. Find the probability that the first acceptable product is the third one inspected​

Answer 1

Answer:

probability should be 1

Step-by-step explanation:

let us consider an example

of having 5 products

since we have 40% rejection rate therefore success rate would be 60%

40:60 is the ratio

it implies 2:3

it conveys for every 5 products he has to decline 2 products and approves 3 products

in question it is mentioned first acceptable is 3 rd one it implies starting two got rejected.

therefore at any cost remaining three should get approve .

so probability would be 1

Answer 2

A quality control inspector rejects 40% of a certain product. Find the probability that the first acceptable product is the third one inspected.

P[X=3] = 0.096