Question

Using the given table, give the percentage associated with each unit of standard deviation in the standard normal curve to the nearest hundredth. (PLEASE EXPLAIN YOUR ANSWER!)

Standard Deviation | Percentage Area
-1 to 0 __________%
0 to +1 __________%
0 to +2 __________%
0 to +3 __________%
-1 to +2 __________%

Answer 1

Answer:49.53

41.92

7.93

46.41

49.99

Explanation:

Answer 2

a) 0.3413 . . . . the area from -1 to 0 is the same as the area from 0 to 1. The normal curve is symmetrical about x=0.

b) 0.3413 . . . . A(1) on the chart

c) 0.4772 . . . . A(2) on the chart

d) 0.4987 . . . . A(3) on the chart

e) 0.3413 + 0.4772 = 0.8185 . . . . A(1)+A(2) on the chart