SOLUTION: The United States Postal Service reports 95 percent of first class mail within the same city is delivered within two days of the time of mailing. Six letters are randomly sent to d
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Question 416333: The United States Postal Service reports 95 percent of first class mail within the same city is delivered within two days of the time of mailing. Six letters are randomly sent to different locations.
a. What is the probability that all six arrive within two days?
Answer by sudhanshu_kmr(1152) (Show Source): You can put this solution on YOUR website!
probability of one letter = 95/100 = 19/20
probability of all six will arrive within two days = (19/20)^6
= 0.735
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