Navigation » List of Schools, Subjects, and Courses » Math 227 – Statistics » Chapter 3 Review Homework » Chapter 3 Review Homework Question 11
With Answers Good news! We are showing you only an excerpt of our suggested answer to this question. Should you need our help in customizing an answer to this question, feel free to send us an email at or chat with our customer service representative.
Chapter 3 Review Homework Question 11
Chapter 3 Review Homework
11
Scores of an IQ test have a bell-shaped distribution with a mean of 100 and a standard deviation of 20. Use the empirical rule to determine the following.
(a) What percentage of people has an IQ score between 80 and 120?
(b) What percentage of people has an IQ score less than 60 or greater than 140 ?
(c) What percentage of people has an IQ score greater than 160?