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 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 or younger and age 40 or older. Sample data follow. Age Group Hours of Sleep 39 or younger 40 or older Fewer than 6 36 34 6 to 6.9 60 57 7 to 7.9 77 75 8 or more 67 94 (a) Conduct a test of independence to determine whether hours of sleep are independent of age. State the null and alternative hypotheses. OH: Hours of sleep per night is mutually exclusive from age. H: Hours of sleep per night is not mutually exclusive from age. OH: The proportion of people who get 8 or more hours of sleep per night is not equal across the two age groups. The proportion of people who get 8 or more hours of sleep per night is equal across the two age groups. OH: Hours of sleep per night is independent of age.
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 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 or younger and age 40 or older. Sample data follow. Age Group Hours of Sleep 39 or younger 40 or older Fewer than 6 36 34 6 to 6.9 60 57 7 to 7.9 77 75 8 or more 67 94 (a) Conduct a test of independence to determine whether hours of sleep are independent of age. State the null and alternative hypotheses. OH: Hours of sleep per night is mutually exclusive from age. H: Hours of sleep per night is not mutually exclusive from age. OH: The proportion of people who get 8 or more hours of sleep per night is not equal across the two age groups. The proportion of people who get 8 or more hours of sleep per night is equal across the two age groups. OH: Hours of sleep per night is independent of age.
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section11.4: Collecting Data
Problem 3E
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