21. Attitudes toward recycled products Exercise 19pg 15 gives data on the opinions of people who have andhave not bought coffee filters made from recycledpaper. To see the relationship between opinion andexperience with the product, find the conditionaldistributions of opinion (the response variable) forbuyers and nonbuyers. What doyou conclude?

Attitude toward the recycled products gives the data on the opinions of people who have and have not…

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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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A survey was conducted to determine whether hours of sleep per night are independent of age. A sample of individuals was asked to indicate the number of hours of sleep per night with categorical options: fewer than 6 hours, 6 to 6.9 hours, 7 to 7.9 hours, and 8 hours or more. Later in the survey, the individuals were asked to indicate their age with categorical options: age 39 or younger and age 40 or older. Sample data follow. Hours of Sleep Age Group 39 or younger 40 or older Fewer than 6 40 38 6 to 6.9 60 57 7 to 7.9 77 75 8 or more 63 90 (a) Conduct a test of independence to determine whether hours of sleep are independent of age. State the null and alternative hypotheses. H0: Hours of sleep per night is not independent of age.Ha: Hours of sleep per night is independent of age. H0: Hours of sleep per night is independent of age.Ha: Hours of sleep per night is not independent of age. H0: The proportion of people who get 8 or more hours of sleep per…
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