A simple random sample of 120 Frederick county residents were asked if they supported an increase in the tax rate. 30 supported this increase. Since it was a random sample, independence is met. However, show that the success/failure condition and the 10% rule are met for this situation.

iv. Since conditions are met, we can state X~N ( ___?________ , ____?________).

What is the name of the second parameter in the space above and how is it determined.