Question

Suppose the people living in a city have a mean score of 48 and a standard deviation score of 7 on a measure of concerns about the environment.
Assume that these concerns are normally distributed using the 50%- 34% - 14% figures.
Appoxatmaily what percentage of people have a score
A. Above 48
B. Above55
C. Above 34
D. Above 41
E. Below 48
F. Below 55
G. Below 34
H. Below 41

Answer 1

f,e,g,or h

Answer 2

Another method.

Z = (score-mean)/SD

Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportions/probabilities related to the Z scores.