The first statistics exam had a mean of 71 and a standard deviation of 11 points; the second had a mean of 84 and an standard deviation of 7 points. Anna scored a 84 on both tests. Megan scored 88 on the first exam and 80 on the second. They both totaled 168 points on the two exams, but Anna claims that her total is better. Explain. The total of Anna's z-scores is 0.6. which is greater than Megan's total of 1. (Round to one decimal place as needed.)

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 26PFA
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The first statistics exam had a mean of 71 and a standard deviation of 11 points; the second had a mean of 84 and a
standard deviation of 7 points. Anna scored a 84 on both tests. Megan scored 88 on the first exam and 80 on the
second. They both totaled 168 points on the two exams, but Anna claims that her total is better. Explain.
The total of Anna's z-scores is 0.6, which is greater than Megan's total of 1
(Round to one decimal place as needed.)
14
14
14.
143
144
145
146
147
Transcribed Image Text:The first statistics exam had a mean of 71 and a standard deviation of 11 points; the second had a mean of 84 and a standard deviation of 7 points. Anna scored a 84 on both tests. Megan scored 88 on the first exam and 80 on the second. They both totaled 168 points on the two exams, but Anna claims that her total is better. Explain. The total of Anna's z-scores is 0.6, which is greater than Megan's total of 1 (Round to one decimal place as needed.) 14 14 14. 143 144 145 146 147
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