Calculate by hand the probability that the number of major earthquakes in 2016 will be
between 131 and 133 inclusive （mean is 133.39024）

Question

Calculate by hand the probability that the number of major earthquakes in 2016 will be 
between 131 and 133 inclusive  （mean is 133.39024）

perl · Answer

whats the stand. dev

anonymous · Answer

1. (Based on Question 10 page 256) For a recent 41-year period, there were 5,469 major 
earthquakes; these are earthquakes measuring at least 6.0 on the Richter scale in the world 
(based on U.S. Geological Survey data). 
a. Find the mean number of major earthquakes per year. 
 
b. Calculate by hand the probability that the number of major earthquakes in 2016 will be 
between 131 and 133 inclusive and check the answer using Excel (see page 254)


i dont think there is a stdev

perl · Answer

maybe theres some distribution you can use, maybe poisson?

anonymous · Answer

i am sure use poisson ， but i dont know  plus or minus the two probability