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)

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section: Chapter Questions
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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
division, 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%
Transcribed Image Text:Assuming that the group of students with a grade arithmetic mean of 70 and a standard deviation of 10 has normal division, 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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