Answer:
0.4032
Step-by-step explanation:
First, we find the z score of the higher given number (20.6)
z-score equation:
z = (x – μ)
σ
In this case, x is 20.6, μ is 20.6, and σ is 2
20.6-20.6=0
0/2 = 0
0 on a z score table is 0.5000
Next, we find the z-score of the lower given number (18)
μ is still 20.6 and σ is still 2
18-20.6 = -2.6
-2.6 / 2 = -1.3
-1.3 on a z-score table is 0.0968
Finally, we subtract our two z-scores
0.5000 - 0.0968 = 0.4032
Answer: 0.4032
