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Rudiy27
3 years ago
7

What operation would I do to find the average of something?

Mathematics
1 answer:
Lady bird [3.3K]3 years ago
5 0
Sum divided by count. Add up all the numbers and divide it by how many numbers it is.
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z = ------------------------------------- = ----------------- = 1.4
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Now find the area under the standard normal curve to the left of z = +1.4.

My calculator returns the following:

normalcdf(-100,1.4) = 0.919.  This is the probability that the mean annual precipitation during those 49 years will be less than 93.8 inches.
 
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