1.44 Make-up exam: In a class of 24 students, 23 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 23 exams and found an average score of 76 points with a standard deviation of 6.9 points. The student who took the make-up the following day scored 61 points on the exam. a) Does the new student's score increase or decrease the average? O Decreases

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1.44 Make-up exam: In a class of 24 students, 23 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 23 exams and found an average
score of 76 points with a standard deviation of 6.9 points. The student who took the make-up the following
day scored 61 points on the exam.
a) Does the new student's score increase or decrease the average?
O Decreases
O Increases
b) The new average is: 75.38
(round to two decimal places)
c) Does the new student's score increase or decrease the standard deviation of the scores?
O Decreases
O Increases
Transcribed Image Text:1.44 Make-up exam: In a class of 24 students, 23 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 23 exams and found an average score of 76 points with a standard deviation of 6.9 points. The student who took the make-up the following day scored 61 points on the exam. a) Does the new student's score increase or decrease the average? O Decreases O Increases b) The new average is: 75.38 (round to two decimal places) c) Does the new student's score increase or decrease the standard deviation of the scores? O Decreases O Increases
Expert Solution
Step 1

Here Given 

In class of 24 ,23 of them took exam in class and 1 on another day.

Now Avg for 23 students

X=76 POINTS= AVERAGE

S= 6.9 POINTS= STANDARD DEVIATION

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