NSA electronics is experimenting with the manufacture of a new type of transistor that is very...

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NSA electronics is experimenting with the manufacture of a newtype of transistor that is very difficult to mass produce at anacceptable quality level. Every hour a supervisor takes a randomsample of 8 transistors produced on the assembly line. From thepast records, 15 per cent of transistors fail in qualityinspection.
4a) NSA wants to know the probability of 0 to 8 defectives ifthe percentage of defective is 15%
4b) At 95% confidence level how many samples will be defective?
4c) At 99% confidence level how many samples will be defective?

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Proportion of failure 15 015 sample size n 8 This is binomial distribution since we have two events failure or success and are independent Let X denotes the number of defectives P defective 015 P not defective 1 P defective 1 015 085 P X 0 8C001500858 0 8C001500858 02725 P X 1 8C101510858 1 8C101510857 03847 P X 2 8C201520858 2 8C201520856 02376 P X 3 8C301530858 3 See Answer

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