In a population survey of patients in a rehabilitation hospital,the mean length of stay in the hospital was 12.0 weeks with astandard deviation equal to 1.0 week. The distribution was normallydistributed. What is the percentile rank for each of the followingz scores? Enter the percentile rank to the right of each z score.Assume a normal distribution.
a) 1.23 _____
b) 0.89 ______
c) -0.46 _____
d) -1.00 ______