Answer:
70
Step-by-step explanation:
it is given that score varies from 500 to 2200
so range =2200-500=1700
standard deviation 
Error E=100
Confidence level =95%=0.95
significance level α=1-0.95=0.05
from the z table
sample size 


so n will be 70
Answer:
No
Step-by-step explanation:
5/6 * 5/6 = .6944
25/6 = 4.1667