Question 252028
Question 1: a) The sales Manager of an Automobile dealer estimated 80% of the new cars delivered by them have no defect and so will not be brought back immediately for repair. He sells a fleet of 10 cars to an important customer.
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What is the probability that — 
(i) No car will be brought back P(none) = (0.80)^10 = 0.1074
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(ii) Exactly two cars will be brought back.
P(x=2) = binompdf(10,0.2,2) = 0.3020
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(iii) At least two cars will be brought back.
P(2 <= x <= 10) = 1 - binomcdf(10,0.2,1) = 0.6242
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Cheers,
Stan H.

b) State the laws of probability.
That is different for every textbook.  Check yours.
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c) Describe giving examples different types of events.
Too broad a question.
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Cheers,
Stan H.