Can anyone help with two basic probability questions?

Posted on 2015-10-19 06:35:00 in Math by BROTT

1. Fire alarms go off in the engineering building an average of 13 times per year. Find the probability of more than one fire alarm going off in the month of December.

2. The weight of a male is a random variable with mean = 185 lbs and standard deviation = 20lbs. A military airplane holds 100 random males on each flight. The total weight of these men is 100 times the average male s weight and the SD of the total weight is 100 times the SD of the average male s weight. Over a large number of flights, what is the estimated total weight of 100 men in an airplane?

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