An electronics firm claims that the proportion of defective units of a certain process is 5%.
A buyer has a standard procedure of inspecting 15 units selected randomly from a large lot.
On a particular occasion, the buyer found fi ve defective items.
a) What is the probability of this occurrence, given that there is a 5% defect rate?
b) what is probability that at least five defective items are found.
A buyer has a standard procedure of inspecting 15 units selected randomly from a large lot.
On a particular occasion, the buyer found fi ve defective items.
a) What is the probability of this occurrence, given that there is a 5% defect rate?
b) what is probability that at least five defective items are found.
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x is bin(15,0.05)
a. P[5] = 15c5 *0.05^5 *0.95^10 = .0562% <------
b. P[≥5] = 1 - P[≤4] = .0615% <-------
a. P[5] = 15c5 *0.05^5 *0.95^10 = .0562% <------
b. P[≥5] = 1 - P[≤4] = .0615% <-------