q1-If z is a standard normal variable find the probability that z lies between 2.01 and 0q2-Find the

q1-If z is a standard normal variable find the probability that z lies between 2.01 and 0q2-Find the z scores for which 90% of the distribution lies between -z and zq3-If z is a standard normal variable find the probability (-0.78<>2.22)q4-use>