A manufacturer of (T V) sets knows from past experience that (4 %) of his products do

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A manufacturer of \(T V\) sets knows from past experience that \(4 \%\) of his products do not pass the final quality check.

(1) What is the probability that in the total monthly production of 2000 sets between 60 and 100 sets do not pass the final quality check?

(2) How many sets have at least to be produced a month to make sure that at least 2000 sets pass the final quality check with probability 0.9 ?

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