I am supposed to find the percentage of me that have a total cholesterol level less than 223 milligrams per deciliter of blood. And find of the 252...

I am supposed to find the percentage of me that have a total cholesterol level less than 223 milligrams per deciliter of blood. And find of the 252 selected. How many would be expected to have a total cholesterol level greater than 265 milligrams per deciliter of blood.