Carmen is making gift boxes for her friends. It takes her 10 minutes to pack a 4-pound treat box, and it takes her 15 minutes to
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Answer:
0.6045 = 60.45% probability that, in any seven-day week, the computer will crash more than 3 times.
Step-by-step explanation:
In a Poisson distribution, the probability that X represents the number of successes of a random variable is given by the following formula:
In which
x is the number of sucesses
e = 2.71828 is the Euler number
is the mean in the given time interval.
The computer that controls a bank's automatic teller machine crashes a mean of 0.6 per day.
7 day week, so
What is the probability that, in any seven-day week, the computer will crash more than 3 times?
Either it crashes 3 or less times, or it crashes more than 3 times. The sum of the probabilities of these events is decimal 1. So
We want P(X > 3). So
In which
0.6045 = 60.45% probability that, in any seven-day week, the computer will crash more than 3 times.