Health Question: To what extent does the age of MI patients vary by gender?

For this health question, I need to write in words the Null and Alternative hypothesis, as well as the statistical notation for both.

I have an idea for the Null & alternative but wanted to make sure that it is correct & I really need help writing the statistical notations.

Null (Ho): Gender does not influence patients age with MI

Alternative (Ha): Gender does influence a patients age with MI