1.)The route that Jacob takes to get to work involves a railroad crossing. If th
ID: 3219755 • Letter: 1
Question
1.)The route that Jacob takes to get to work involves a railroad crossing. If there is no train, he will get to work in 20 minutes; If there is a train, it will take him 30 minutes. The probability of a train is 40%.
What is the expected (mean) time it will take Jacob to get to work?
2.)In assembling the team for his next Impossible Mission, Mr. Phelps needs to select a safe cracker, a driver, a master of disguises, and a weapons expert. Among the people available, he has 2 safe crackers to choose from, 5 drivers, only one master of disguises, and 7 weapons experts..
How many possible distinct teams could he assemble?
Explanation / Answer
Expected time = x * P(x)
= 20 * (1 - 0.40) + 30 * 0.40
= 24 minutes
It will take Jacob about 24 minutes to get to work.
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