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 33? b) About what percent of students scored under 16? c) About what percent of students scored between 16 and 33?
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 33? b) About what percent of students scored under 16? c) About what percent of students scored between 16 and 33?
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 9PPS
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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 33?
b) About what percent of students scored under 16?
c) About what percent of students scored between 16 and 33?
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