In the Ardmore Hotel, 20 percent of the customers pay by
American Express credit card.
(a) Of the next 10 customers, what is the probability that
none pay by American Express?
(b) At least two?
(c) Fewer than three?
(d) What is the expected number who pay by American Express?
(e) Find the standard deviation.
(f) Construct the probability distribution (using Excel or
(g) Make a graph of its PDF, and describe its shape.
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