After commissioning in a wafer fab, it is found that 20% of the memory chips made in the plant are defective. A lot of 300 these memory chips is randomly chosen for inspection. What is the probability that at most 30 will be defective?

MATLAB: An Introduction with Applications
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commissioning
After
in a wafer fab, it is found that 20% of the memory chips made in
the plant are defective. A lot of 300 these memory chips is randomly chosen for
inspection. What is the probability that at most 30 will be defective?
Hint: use the normal approximation to the binomial probability
Let μ = np = 300(0.2) = 60, and σ = √√npq,
You may use the Z transformation of the normal distribution by using the z table with
z = x-μ/
Transcribed Image Text:commissioning After in a wafer fab, it is found that 20% of the memory chips made in the plant are defective. A lot of 300 these memory chips is randomly chosen for inspection. What is the probability that at most 30 will be defective? Hint: use the normal approximation to the binomial probability Let μ = np = 300(0.2) = 60, and σ = √√npq, You may use the Z transformation of the normal distribution by using the z table with z = x-μ/
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