Did I Get This – Standard Deviation Rule
In general, the larger the animal the longer the length of pregnancy (also called gestation period). For the horse, for example, the gestation period varies roughly according to a normal distribution with a mean of 336 days and a standard deviation of 3 days (Source: These figures are from Moore and McCabe, Introduction to the Practice of Statistics). Use the Standard Deviation Rule to answer the following questions: (a picture of the SD rule applied to this distribution will help).
The body temperatures of dogs are normally distributed with a mean of 101.3°F and a standard deviation of .6°F. Use this information to answer the following questions:
This document is linked from The Normal Shape.