# Math Help - left tail, right tail, two tail

1. ## left tail, right tail, two tail

I'm having a hard time trying to fiqure out this problem.
the instructions say to determine whether the hypothesis test for each claim is left-tailed, right-tailed, two-tailed. then explain why

The mean life of a certain tire is no less than 50,000 miles.

What steps do I take, the book does a crappy job!

2. Originally Posted by mkcar
I'm having a hard time trying to fiqure out this problem.
the instructions say to determine whether the hypothesis test for each claim is left-tailed, right-tailed, two-tailed. then explain why

The mean life of a certain tire is no less than 50,000 miles.

What steps do I take, the book does a crappy job!
A two tailed test is one to test a hypothesis about $x$ of the form: $x_{left}

A (left) one tailed test is one to test a hypothesis about $x$ of the form: $x_{left}

A (right) one tailed test is one to test a hypothesis about $x$ of the form: $x

RonL

3. Originally Posted by mkcar
What steps do I take, the book does a crappy job!