Suppose heights of dogs in inches in a city are normally distributed and have a known population standard deviation of 7 inches and an unknown population mean A random sample of 15 dogs is taken and gives a sample mean of 34 inches Find the confidence interval for the population mean with a 99 confidence level Provido Z0 10 1 282 Use the common z values given above Round the final answer to two decimal places holow Z0 05 1 645 Zo 025 1 960 Z0 01 2 326 Z0 005 2 576