When comparing shipments intended for delivery in three days, first-class deliveries failed to deliver on time 19% of the time, while priority mail failed 33% of the time if 10 items are to be shipped first-class to 10 different destinations claimed to be in a three-day delivery location, what is the probability that....
a. 0 items will take more than three days
b. exactly 1 item will take more than three days
c. 2 or more will take more than three days
d. what are the mean and the standard deviation of the probability distribution

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