answer:@peachfuzz I see you are new here so I will try to explain this without getting into a fight with you. I see that has happened already with another member. No need to call names from either of us. On Fluther members will try to help you if they can and won’t give you an answer to a homework question or quiz. In statistics, the equation is part of the answer. You already know that if you know the equation, you can plug in the numbers and get the answer. We won’t give you the equation. If you look at the Part A of your question, you can get the answer without even knowing the equation. Once you have the answer you will be able to work backward to get the equation for your teacher. I know this sounds complicated, but it isn’t. It may take a lot of thought. Do you know the answer to part A? If so, we can go from there. Good luck.