Question

1. Suppose that a shipment of 120 electronics components contains 10 defective components. If the control engineer selects 6 of these components at random and test them

a. What is the probability that exactly 3 of those selected are defective? What is the probability that exactly 4 of those selected are not defective?

b. What is the probability that at least 3 of those selected are defective?

c. What is the probability that fewer than 4 selected are not defective?

Answer #1

The probability function of binomial p is given by

p ( X = x ) = ( ncx)

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In quality control technique, acceptance sampling is used to
monitor incoming shipment of parts,
raw materials, and so on. In the electronic industry, components
parts are commonly shipped from
suppliers in large lots. Reynolds Electronics accepts a lot from a
particular supplier if the defective
components in the lot do not exceed 2%. Suppose a random of 5 items
from a recent shipment is
tested.
1. What is the appropriate distribution that can be used here?
Explain why.
2. What...

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monitor incoming shipment of parts, raw materials, and so on. In
the electronic industry, components parts are commonly shipped from
suppliers in large lots. Reynolds Electronics accepts a lot from a
particular supplier if the defective components in the lot do not
exceed 2%. Suppose a random of 5 items from a recent shipment is
tested.
1. What is the appropriate distribution that can be used here?
Explain why.
2. What...

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