A researcher wanted to determine if using an octane booster would increase gasoline mileage. A random sample of seven cars was selected; the cars were driven for two weeks without the booster and two weeks with the booster. Use the definitions of $X _ { 1 }$ and $X _ { 2 }$ as given in the table. Consequently, $D = X _ { 1 } - X _ { 2 }$. State the alternative hypothesis. A) $H _ { 1 } : \mu _ { D } = 0$ B) $H _ { 1 } : \mu _ { D } 0$

Question

A researcher wanted to determine if using an octane booster would increase gasoline mileage. A random sample of seven cars was selected; the cars were driven for two weeks without the booster and two weeks with the booster. Use the definitions of $X _ { 1 }$ and $X _ { 2 }$ as given in the table. Consequently, $D = X _ { 1 } - X _ { 2 }$.

State the alternative hypothesis.
A) $H _ { 1 } : \mu _ { D } = 0$ 
B) $H _ { 1 } : \mu _ { D } < 0$ 
C) $H _ { 1 } : \mu _ { D } \neq 0$ 
D) $H _ { 1 } : \mu _ { D } > 0$

Quizplus · Accepted Answer

The Answer of A researcher wanted to determine if using an octane booster would increase gasoline mileage. A random sample of seven cars was selected; the cars were driven for two weeks without the booster and two weeks with the booster. Use the definitions of $X _ { 1 }$ and $X _ { 2 }$ as given in the table. Consequently, $D = X _ { 1 } - X _ { 2 }$.

State the alternative hypothesis.
A) $H _ { 1 } : \mu _ { D } = 0$ 
B) $H _ { 1 } : \mu _ { D } < 0$ 
C) $H _ { 1 } : \mu _ { D } \neq 0$ 
D) $H _ { 1 } : \mu _ { D } > 0$

A Researcher Wanted to Determine If Using an Octane Booster X1X _ { 1 }X1​

A Researcher Wanted to Determine If Using an Octane Booster $X _ { 1 }$