solve the problem for a standard normal distributionfind the

solve the problem. for a standard normal distribution,find the percentage of data that are more than 1 standard deviation away from the mean.

Solution

Given that the mean (u) of a normal probability distribution is 0 and the
standard deviation (sd) is 1.
(a) About 68% of the area under the normal curve is within one standard deviation of the mean. i.e.
(u ± 1s.d)