In a class of 30 students, 29 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 29 exams and found an average score of 80 points with a standard deviation of 7.1 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? Decreases Increases 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? Increases Decreases
In a class of 30 students, 29 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 29 exams and found an average score of 80 points with a standard deviation of 7.1 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? Decreases Increases 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? Increases Decreases
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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1.44 Make-up exam: In a class of 30 students, 29 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 29 exams and found an average score of 80 points with a standard deviation of 7.1 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?
- Decreases
- Increases
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?
- Increases
- Decreases
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