Tell me what you want to do Enable Editing Final exam revision Solving problems and References View Mailings Design Help TECTED VIEW Be careful-files from the internet can contain vinuses. Unless you need to edit, it's safer to stay in Protected View 2. Suppose that a factory producing the batteries. From the factory production, 6 batteries are drawn to test for the lifetime (in hours). These lifetimes are: 10, 9, 15, 17, 14, 13. a. Find a point estimate for , the mean lifetime of all the batteries in the factory. The point estimate for u is x=(10+9+15+17+14+13)/6=13 b. what is a 99% confidence interval for the population mean () assuming that the population standard deviation is known to be 3? x==0/2 11 The confidence interval for the population mean is computed as x =a/2

2. Suppose that a factory producing the batteries. From the factory production, 6 batteries are drawn to test for the lifetime (in hours). These lifetimes are: 10,9,15,17,14,13. 2. Find a point estimate for , the mean lifetime of all the batteries in the factory. b. What is n99% confidence interval for the population mean () assuming that the population standard deviation is known to be 3 ? The confidence interval for the population mean is computed as x=a/2n