The IQ scores of a large group of students are approximately normally distributed. What is the probability that a randomly chosen student from this group will have an IQ score between 108 and 127 if the z scores are z,=-0.47 and z,=0.8 respectively? (A) 31.92% (B) 78.81% 89.27% D 46.89%

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
Problem 8CR
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The IQ scores of a large group of students are approximately normally distributed. What is the probability that a
randomly chosen student from this group will have an IQ score between 108 and 127 if the z scores are
z, =-0.47 and z,=0.8 respectively?
(A
31.92%
(B
78.81 %
89.27 %
D)
46.89 %
Transcribed Image Text:The IQ scores of a large group of students are approximately normally distributed. What is the probability that a randomly chosen student from this group will have an IQ score between 108 and 127 if the z scores are z, =-0.47 and z,=0.8 respectively? (A 31.92% (B 78.81 % 89.27 % D) 46.89 %
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