Assuming that the group of students with a grade arithmetic mean of 70 and a standard deviation of 10 has normaldivision, what is the probability that a randomly selected student will have a grade between 60-80?21 -a) 26.26%B) 58.26%C) 38.26%D) 68.26%O TO) 28.26%

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Assuming that the group of students with a grade arithmetic mean of 70 and a standard deviation of 10 has normal 21 - division, what is the probability that a randomly selected student will have a grade between 60-80? O a) 26.26% O B) 58.26% O C) 38.26% O D) 68.26% O TO)

Assuming that the group of students with a grade arithmetic mean of 70 and a standard deviation of 10 has normal 21 - division, what is the probability that a randomly selected student will have a grade between 60-80? O a) 26.26% O B) 58.26% O C) 38.26% O D) 68.26% O TO)

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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