# A city police department is considering replacing the tires on its cars with a new brand tires.

## Question:

(a) What alternative hypothesis should the department use if it does not want to use the new tires unless they are definitely proved to give better mileage? In other words, the burden of proof is put on the new tires, and the old tires are to be kept unless the null hypothesis can be rejected.

kept unless the null hypothesis can be rejected.

(b) What alternative hypothesis should the department use if it is anxious to get the new tires unless they actually give poorer mileage than the old tires? Now the burden of proof is on the old tires, which will be kept only if the null hypothesis can be rejected.

(c) What alternative hypothesis should the department use so that rejection of the null hypothesis can lead either to keeping the old tires or to buying the new ones?

Fantastic news! We've Found the answer you've been seeking!

## Step by Step Answer:

**Related Book For**

## John E Freunds Mathematical Statistics With Applications

**ISBN:** 9780134995373

8th Edition

**Authors:** Irwin Miller, Marylees Miller