Question

a car maker claims that its new sub - compact car gets better than 45 miles per gallon on the highway. determine whether the hypothesis test for this is left - tailed, right - tailed, or two - tailed. a. right - tailed b. two - tailed c. left - tailed

Explanation:

In hypothesis testing, the claim \( \mu>45 \) (where \( \mu \) is the mean miles per gallon). The alternative hypothesis \( H_{1}:\mu > 45 \). For a one - sided alternative hypothesis of the form \( H_{1}:\mu>\mu_{0} \), the test is right - tailed. The critical region is in the right tail of the sampling distribution.

Answer:

A. right - tailed