A study conducted by the research institute of America has concluded that the mean number of hours a person spends in their car during a typical week in 1999 15 hours. Given that times have changed in the past 20 years in terms of employment rates and public transit, it is reasonable to believe people spend more or less time in their car every week. Because we can see it going either way, we want to test the null hypothesis that the people spend 15 hours in their car against our alternative hypothesis that people spend a different amount of time in the car in 2019 compared to 1999.
A study conducted by the research institute of America has concluded that the mean number of hours a person spends in their car during a typical week in 1999 15 hours. Given that times have changed in the past 20 years in terms of employment rates and public transit, it is reasonable to believe people spend more or less time in their car every week. Because we can see it going either way, we want to test the null hypothesis that the people spend 15 hours in their car against our alternative hypothesis that people spend a different amount of time in the car in 2019 compared to 1999.
Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter7: Distance And Approximation
Section7.3: Least Squares Approximation
Problem 31EQ
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