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K The Mathematics section of the ACT test had a mean of 20.9 and an SD of 5.3 for the years 2013-2015. Suppose these are well modeled by a Normal distribution. a) About what percent of students scored over 31? b) About what percent of students scored under 187 c) About what percent of students scored between 18 and 31? VEY a) About% percent of students scored over 31. (Round to one decimal place as needed.)

K The Mathematics section of the ACT test had a mean of 20.9 and an SD of 5.3 for the years 2013-2015. Suppose these are well modeled by a Normal distribution. a) About what percent of students scored over 31? b) About what percent of students scored under 187 c) About what percent of students scored between 18 and 31? VEY a) About% percent of students scored over 31. (Round to one decimal place as needed.)

Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
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S K The Mathematics section of the ACT test had a mean of 20.9 and an SD of 5.3 for the years 2013-2015. Suppose these are well modeled by a Normal distribution. a) About what percent of students scored over 31? b) About what percent of students scored under 187 c) About what percent of students scored between 18 and 31? a) About % percent of students scored over 31. (Round to one decimal place as needed.) View an example Get more help - Clear all Check answer
Transcribed Image Text:S K The Mathematics section of the ACT test had a mean of 20.9 and an SD of 5.3 for the years 2013-2015. Suppose these are well modeled by a Normal distribution. a) About what percent of students scored over 31? b) About what percent of students scored under 187 c) About what percent of students scored between 18 and 31? a) About % percent of students scored over 31. (Round to one decimal place as needed.) View an example Get more help - Clear all Check answer
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