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# Car security alarms go off at a mean rate of 4.0 per hour in a large Costco parking lot. Find the probability that in an hour there will be (Round...

Car security alarms go off at a mean rate of 4.0 per hour in a large Costco parking lot.

Find the probability that in an hour there will be (Round your answers to 4 decimal places.)

Probability

(a)No alarms

(b)Fewer than five alarms

(c)More than seven alarms

a. P(X=0)=0.0183 b.... View the full answer

(a) The probability that in an hour, there will be no alarms is 0.0183.... View the full answer

1 comment
• Sorry, in the last part, I forgot to do 1-P(X<=7) = 1-0.9489 =0.0511. So, the probability that more than 7 alarms is 0.0511.
• gauri.mohan
• May 10, 2018 at 11:33pm

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