For quality control purposes, a company that manufactures sim chips for cell/smart phones routinely takes samples from its production process. Since it is important that
These chips are nearly fault free, one inspection check involves using microscopic
Equipment to count the number of imperfections on each chip. Suppose the average
Number of imperfections per 1000 sim chips is 3.What is the probability that a sample of
This size has no more than 2 imperfections?
A) 0.4232
B) 0.2510
C) 0.2240
D) 0.5689
E) 0.0034

Question

Quizplus · Accepted Answer

The number of imperfections follows a Poisson distribution with λ = 3. The probability of having no more than 2 imperfections is the sum of probabilities of having 0, 1, or 2 imperfections, which is approximately 0.4232.

For Quality Control Purposes, a Company That Manufactures Sim Chips