Suppose you have a test with a mean of 66 and a standard deviation of 5. If you first increase scores by 15% and then add 5 points on top of that, what is the new mean and standard deviation for the adjusted test scores?

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.5: Comparing Sets Of Data
Problem 13PPS
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Suppose you have a test with a mean of 66 and a standard deviation of 5. If you first increase scores by 15% and then add 5 points on top of that, what is the new mean and standard deviation for the adjusted test scores?

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