Assume the salaries of elementary school teachers in the US are normally distributed with a mean of $48,000 and a standard deviation of $3,000. a) What percentage of elementary school teachers have a salary of more than $50,000? b) If 1,000 teachers are selected, how many would you expect, approximately, to have a salary of less than $45,000? c) What is the 99th percentile of salaries?
Assume the salaries of elementary school teachers in the US are normally distributed with a mean of $48,000 and a standard deviation of $3,000. a) What percentage of elementary school teachers have a salary of more than $50,000? b) If 1,000 teachers are selected, how many would you expect, approximately, to have a salary of less than $45,000? c) What is the 99th percentile of salaries?
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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Assume the salaries of elementary school teachers in the US are
a) What percentage of elementary school teachers have a salary of more than $50,000?
b) If 1,000 teachers are selected, how many would you expect, approximately, to have a salary of less than $45,000?
c) What is the 99th percentile of salaries?
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