5. In general mathematics examination, students got an average of 82 and the standard deviation of 7. If there are 10 students who got the score between 78 to 86, and more or less the grade is normally distributed, how many students took the examination?
5. In general mathematics examination, students got an average of 82 and the standard deviation of 7. If there are 10 students who got the score between 78 to 86, and more or less the grade is normally distributed, how many students took the examination?
Algebra: Structure And Method, Book 1
(REV)00th Edition
ISBN:9780395977224
Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Chapter7: Applying Fractions
Section7.2: Proportions
Problem 47WE
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Answer item no. 5 only and DO NOT USE EXCEL
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