Standard Deviation

Question

Approximately what percent of a standard normal distribution is found within each region? Hint: Drawing a graph may help.Note: Please enter your answers in percentages.

a.  Between the mean and one standard deviation below the mean: %

b. One standard deviation below the mean to two standard deviations above the mean: %

c. Greater than two standard deviations above the mean: %

what are the percentages

Answer 1

When I tested students formally there was a 15 point standard deviation for many of the tests for aptitude.