Probability & Statistics - Old Questions

10. Given a normal distribution with mean 200 and s.d. 20, find the probability that

i) P(X>180)

ii) P(X<220)

iii) P(160<X<240)

iv) P(X>220)

v) P(X<180 orX>220)

vi) 10% of the values are less than what values of X?