1.44 Make-up exam:  In a class of 29 students, 28 of them took an exam in class and 1 student took a make-up exam the following day. The professor graded the first batch of 28 exams and found an average score of 85 points with a standard deviation of 7.6 points. The student who took the make-up the following day scored 64 points on the exam.

a) Does the new student's score increase or decrease the average?

b) The new average is: (round to two decimal places)
c) Does the new student's score increase or decrease the standard deviation of the scores?