A class of 135 students took a final examination in mathematics. The scores were normally distributed with a mean score of 68% and a standard deviation of 8.5%. Determine the percentile rank of each of the following people:

(a) Jennifer, who scored 78 %

(b) Steven, who got 55 %

(c) Jessica, who was very happy with her mark of 89 %

(a) Jennifer, who scored 78 %

(b) Steven, who got 55 %

(c) Jessica, who was very happy with her mark of 89 %