A commuter train from Long Island to New York City is scheduled to arrive at 8:07 A.M.
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Question:
A commuter train from Long Island to New York City is scheduled to arrive at 8:07 A.M. every weekday morning. The probability that the train arrives on time is 0.90. Suppose 20 weekdays are randomly selected.
a. Find the probability that the train will arrive on time on at most 15 days.
b. Find the probability that the train will arrive on time on at least 12 days.
c. Suppose the train arrives on time on at least 15 days. What is the probability that it arrives on time on all 20 days?
Related Book For
Statistics for Managers Using Microsoft Excel
ISBN: 978-0133130805
7th edition
Authors: David M. Levine, David F. Stephan, Kathryn A. Szabat
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