stats
posted by Komal .
For a normal population with µ = 100 and σ = 20:
1. What is the probability of a particular score being greater than 110?
2. What is the probability of a particular score being less than 50?

Use zscores:
z = (x  mean)/sd
Your data:
x = 110, 50
mean = 100
sd = 20
Calculate both zscores. Use a ztable to determine probability for each score.
I hope this will help get you started.