Question: Suppose we wanted to conduct a survey. It is desired that we produce an interval estimate of the population mean that is ±5 from the true population mean with 99% confidence. Based on a historical planning value of 15 for a, how big should your sample be? Derive the result and show your work. The response must be typed, single spaced, must be in times new roman font (size 12) and must follow the APA format.