Question

About 30 % of those called for jury duty will find an excuse to avoid it....

About 30 % of those called for jury duty will find an excuse to avoid it. If 9 are called for jury duty:
(a) What is probability that all 9 will serve on jury duty?  
(b) What is the probability that 3 or more will not serve on jury duty?

Math   Statistics-And-Probability   
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