Probability-randomly selected letters

Reference no: EM1317637

It is claimed that 95 percent of the 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 within the same city.

A. What is the probability that all six arrive within two days?

B. What is the probbility that exactly five arrive within two days?

Reference no: EM1317637

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