What following?
Z = (score-mean)/SD
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability related to the Z score.
This may help you decide.
For the past 20 years, the high temperature on April 15th has averaged = 62 degrees with a standard deviation of = 12. Last year, the high temperature was 68 degrees. Based on this information, which of the following best describes last year's temperature on April 15th?
2 answers
Far above average