A Hypothesis Test Is to Be Performed $< 23 \mathrm { mpg }$

Multiple Choice

A hypothesis test is to be performed. State the null and alternative hypotheses.
-Carter Motor Company claims that its new sedan, the Libra, will average better than 25 miles per gallon, which is the gas mileage of its competitor.

A) Null hypothesis: mean gas mileage $< 23 \mathrm { mpg }$
Alternative hypothesis: mean gas mileage $> 23 \mathrm { mpg }$
B) Null hypothesis: mean gas mileage $> 23 \mathrm { mpg }$
Alternative hypothesis: mean gas mileage $= 23 \mathrm { mpg }$
C) Null hypothesis: mean gas mileage $= 23 \mathrm { mpg }$
Alternative hypothesis: mean gas mileage $\geq 23 \mathrm { mpg }$
D) Null hypothesis: mean gas mileage $= 23 \mathrm { mpg }$
Alternative hypothesis: mean gas mileage $> 23 \mathrm { mpg }$