The mean of a normal probability distribution is 500; the standard deviation is 10.?

Question

A. About 68 percent of the observations lie between what two values?
B. About 95 percent of the observation lie between what two values?
C. Practically all of the observations lie between what two values?

Answer 1

u wont understand anything unless if u ask your teacher about the very basics in dealing with normal distribution.OR tell us how much u know about these type of problems
1.u have to standardise your distribution to z~N(0,1)