Positive Measure: Measure of Sets with Positive Function Value

[becu]

Homework Statement

Suppose that if k is a measurable function and {x : k(x) > 0} has a positive measure, then {x : k(x) >= p} has positive measure for some p > 0

Homework Equations

Lebesgue measure

The Attempt at a Solution

What is positive measure? is it just another word for measurable? Can I have some hint on how to attack this problem?

Thank you.

 

[becu]

bump!

i just need hint.

thanks