In order to meet air pollution standards, the mean emission level for engines of a certain type must be less than 20 parts per million (ppm) of carbon. A study is to be done to determine if the engines from a particular company meet the standard. Which of the following represents the correct null and alternative hypotheses for this study? Let μ=μ= the mean parts/million of carbon emitted for these cars. a.H0:μ=20;Ha:μ>20H0:μ=20;Ha:μ>20 b.H0:μ≥20;Ha:μ>20H0:μ≥20;Ha:μ>20 c.H0:μ=20;Ha:μ≥20H0:μ=20;Ha:μ≥20 d.H0:μ≥20;Ha:μ<20H0:μ≥20;Ha:μ<20 e.H0:μ>20;Ha:μ<20
In order to meet air pollution standards, the mean emission level for engines of a certain type must be less than 20 parts per million (ppm) of carbon. A study is to be done to determine if the engines from a particular company meet the standard. Which of the following represents the correct null and alternative hypotheses for this study? Let μ=μ= the mean parts/million of carbon emitted for these cars. a.H0:μ=20;Ha:μ>20H0:μ=20;Ha:μ>20 b.H0:μ≥20;Ha:μ>20H0:μ≥20;Ha:μ>20 c.H0:μ=20;Ha:μ≥20H0:μ=20;Ha:μ≥20 d.H0:μ≥20;Ha:μ<20H0:μ≥20;Ha:μ<20 e.H0:μ>20;Ha:μ<20
Mathematics For Machine Technology
8th Edition
ISBN:9781337798310
Author:Peterson, John.
Publisher:Peterson, John.
Chapter44: Solution Of Equations By The Subtraction, Addition, And Division Principles Of Equality
Section: Chapter Questions
Problem 5A
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In order to meet air pollution standards, the mean emission level for engines of a certain type must be less than 20 parts per million (ppm) of carbon. A study is to be done to determine if the engines from a particular company meet the standard. Which of the following represents the correct null and alternative hypotheses for this study? Let μ=μ= the mean parts/million of carbon emitted for these cars.
a.H0:μ=20;Ha:μ>20H0:μ=20;Ha:μ>20
b.H0:μ≥20;Ha:μ>20H0:μ≥20;Ha:μ>20
c.H0:μ=20;Ha:μ≥20H0:μ=20;Ha:μ≥20
d.H0:μ≥20;Ha:μ<20H0:μ≥20;Ha:μ<20
e.H0:μ>20;Ha:μ<20
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