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 81 points with a standard deviation of 7.4 points. The student who took the make-up the following day scored 60 points on the exam. a) Does the new student's score increase or decrease the average? b) The new average is c) Does the new student's score increase or decrease the standard deviation of the scores?

Question

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 81 points with a standard deviation of 7.4 points. The student who took the make-up the following day scored 60 points on the exam.

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

b) The new average is

c) Does the new student's score increase or decrease the standard deviation of the scores?

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