Car security alarms go off at a mean rate of 3.8 per hour in
a large Costco parking lot. Find the probability that in an hour there will be
(a) no alarms; (b) fewer than four alarms; and (c) more than five alarms.
The probability of a job offer in a given interview is .25.
(a) What is the expected number of interviews until the first job offer? (b)
What is the probability of six or fewer interviews before the first job offer?
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