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The 21st Century grade of students in a certain school is normally distributed with a mean of 87.18 and a standard deviation of 2.99. What range of scores represents the middle 75% of the students? (82.5, 90.5) (85.12, 91.25) (81.53, 88.67) (83.74, 90.62)

The 21st Century grade of students in a certain school is normally distributed with a mean of 87.18 and a standard deviation of 2.99. What range of scores represents the middle 75% of the students? (82.5, 90.5) (85.12, 91.25) (81.53, 88.67) (83.74, 90.62)

A First Course in Probability (10th Edition)
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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The 21st Century grade of students in a certain school is normally distributed with a mean of 87.18 and a standard deviation of 2.99. What range of scores represents the middle 75% of the students? (82.5, 90.5) (85.12, 91.25) (81.53, 88.67) (83.74, 90.62)
Transcribed Image Text:The 21st Century grade of students in a certain school is normally distributed with a mean of 87.18 and a standard deviation of 2.99. What range of scores represents the middle 75% of the students? (82.5, 90.5) (85.12, 91.25) (81.53, 88.67) (83.74, 90.62)
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