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A grocery bag can be classified as either paper or plastic . Suppose that 92 ?%...

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Basic Math

A grocery bag can be classified as either paper or plastic .Suppose that 92 ?% of grocery bags are classified as plastic . ?(a)Two grocery bags are chosen at random. What is the probability thatboth grocery bags are plastic ?? ?(b) Nine grocery bags are chosenat random. What is the probability that all nine grocery bags areplastic ?? ?(c) What is the probability that at least one of ninerandomly selected grocery bags is paper ?? Would it be unusual thatat least one of nine randomly selected grocery bags is paper ??

Answer & Explanation Solved by verified expert
4.4 Ratings (787 Votes)

p = 0.92

a) P(both bags are plastic) = 0.922 = 0.8464

b) P(all nine bags are plastic) = 0.929 = 0.4722

c) P(at least one out of 9 bags is paper) = 1 - P(zero bags are paper)

                                                                = 1 - P(all nine bags are plastic)

                                                                = 1 - 0.4722

                                                                = 0.5278

No this is not unusual, because the probaility is not less than 0.05
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