Mathematics, 12.05.2021 14:00 springcoates
The switchboard in a Minneapolis law office gets an average of 5.5 incoming phone calls during the noon hour on
Mondays. Experience shows that the existing staff can handle up to six calls in an hour. Let x = the number of calls
received at noon.
a Find the mean and standard deviation of X.
b. What is the probability that the office receives at most six calls at noon on Monday?
c. Find the probability that the law office receives six calls at noon. What does this mean to the law office staff who
get, on average, 5.5 incoming phone calls at noon?
d. What is the probability that the office receives more than eight calls at noon?
Answers: 1
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