Since some professors give harder exams than others, these students decided to use statistics to figure out who did the best on their exam. Use the Cumulative z-Score Table to answer the following questions. Write your answers as a porcent with two decimal places. Hint Lucille's score places her above % of her class. • Rocio's score places her above % of her class. • Cristina's score places her above % of her class.

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Lucille, Rocio, and Cristina are all taking College Mathematics but from different professors. They all
recently took a statistics exam and the exam scores were normally distributed in each of their classes.
• Lucille's class had an average grade of 78 and the standard deviation was 7. Lucille earned 83.95 on
the exam.
• Rocio's class had an average grade of 82 and the standard deviation was 3. Rocio earned 86.5 on the
exam.
• Cristina's class had an average grade of 76 and the standard deviation was 4. Cristina earmed 82.8
on the exam.
Since some professors give harder exams than others, these students decided to use statistics to figure out who did the
best on their exam.
Use the Cumulative Z-Score Table to answer the following questions. Write your answers as a percent with two decimal
places. Hint
• Lucille's score places her above
% of her class.
• Rocio's score places her above
% of her class.
• Cristina's score places her above
% of her class.
Transcribed Image Text:Lucille, Rocio, and Cristina are all taking College Mathematics but from different professors. They all recently took a statistics exam and the exam scores were normally distributed in each of their classes. • Lucille's class had an average grade of 78 and the standard deviation was 7. Lucille earned 83.95 on the exam. • Rocio's class had an average grade of 82 and the standard deviation was 3. Rocio earned 86.5 on the exam. • Cristina's class had an average grade of 76 and the standard deviation was 4. Cristina earmed 82.8 on the exam. Since some professors give harder exams than others, these students decided to use statistics to figure out who did the best on their exam. Use the Cumulative Z-Score Table to answer the following questions. Write your answers as a percent with two decimal places. Hint • Lucille's score places her above % of her class. • Rocio's score places her above % of her class. • Cristina's score places her above % of her class.
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