A fleet of rental cars - all the same make, model, and year - has a mean fuel efficiency of $24.1$ miles per gallon (mpg). A random sample of 40 cars are selected and the air filter of each is replaced with a new one. Let $\mu$ be the population mean fuel efficiency score that would occur if every car's air filter were replaced. The air filter change is deemed effective if $\mu 24.1 \mathrm { mpg }$. A test is made of $H _ { 0 } : \mu = 24.1$ versus $H _ { 1 } : \mu 24.1$.

Assume that the air filter changes are effective. Which type of error is impossible?
A) Type I
B) Type II

Question

A fleet of rental cars - all the same make, model, and year - has a mean fuel efficiency of

24.1

miles per gallon (mpg) . A random sample of 40 cars are selected and the air filter of each is replaced with a new one. Let

\mu

be the population mean fuel efficiency score that would occur if every car's air filter were replaced. The air filter change is deemed effective if

\mu > 24.1 \mathrm { mpg }

. A test is made of

H _ { 0 } : \mu = 24.1

versus

H _ { 1 } : \mu > 24.1

.

Assume that the air filter changes are effective. Which type of error is impossible?

Assume that the air filter changes are effective. Which type of error is impossible?
A) Type I
B) Type II

Quizplus · Accepted Answer

The Answer is A

A Fleet of Rental Cars - All the Same Make 24.124.124.1