Sarah was told that she scored two standard deviations above the mean on her PSYCO 104 final exam. Her instructor posted the class distribution and revealed the mean was 65% and the standard deviation was 10%. What was Sarah's test result? O a. 55% O b. 45% O c. 85% O d. 75% O e. 55%

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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Sarah was told that she scored two standard deviations above the mean on her PSYCÓ 104 final exam. Her instructor posted the class
distribution and revealed the mean was 65% and the standard deviation was 10%. What was Sarah's test result?
cro
O a. 55%
cro
O b. 45%
cro
O c. 85%
crc
O d. 75%
crc
O e. 55%
Transcribed Image Text:Sarah was told that she scored two standard deviations above the mean on her PSYCÓ 104 final exam. Her instructor posted the class distribution and revealed the mean was 65% and the standard deviation was 10%. What was Sarah's test result? cro O a. 55% cro O b. 45% cro O c. 85% crc O d. 75% crc O e. 55%
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