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The following table gives the cumulative frequency distribution of annual incomes (in thousands of dollars) for a sample of families selected from a city. Income ($1000’s) f 10 to less than 25 25 10 to less than 40 79 10 to less than 55 149 10 to less than 70 167 10 to less than 85 191 10 to less than 100 200

The following table gives the cumulative frequency distribution of annual incomes (in thousands of dollars) for a sample of families selected from a city. Income ($1000’s) f 10 to less than 25 25 10 to less than 40 79 10 to less than 55 149 10 to less than 70 167 10 to less than 85 191 10 to less than 100 200

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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3. The following table gives the cumulative frequency distribution of annual incomes (in thousands of dollars) for a sample of families selected from a city. Income ($1000’s) f 10 to less than 25 25 10 to less than 40 79 10 to less than 55 149 10 to less than 70 167 10 to less than 85 191 10 to less than 100 200 Find : a. The cumulative relative frequency of the fourth class, rounded to three decimal places. b. The sample size. c. The cumulative percentage for the second class, rounded to one decimal place. d. The percentage of families with an income of less than $55,000, rounded to one decimal place. e. The percentage of families with an income of $70,000 or more, rounded to one decimal place. f. The number of families with an income of $40,000 or less. g. The number of families with an income of $85,000 or more.
Transcribed Image Text:3. The following table gives the cumulative frequency distribution of annual incomes (in thousands of dollars) for a sample of families selected from a city. Income ($1000’s) f 10 to less than 25 25 10 to less than 40 79 10 to less than 55 149 10 to less than 70 167 10 to less than 85 191 10 to less than 100 200 Find : a. The cumulative relative frequency of the fourth class, rounded to three decimal places. b. The sample size. c. The cumulative percentage for the second class, rounded to one decimal place. d. The percentage of families with an income of less than $55,000, rounded to one decimal place. e. The percentage of families with an income of $70,000 or more, rounded to one decimal place. f. The number of families with an income of $40,000 or less. g. The number of families with an income of $85,000 or more.
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