37 Suppose germination periods, In days, for grass seed are normally distributed and have a known population standard deviation of 5 days and an unknown population mean. A random sample of 19 types of grass seed is taken and gives a sample mean of 36 days. Find the confidence interval for the population mean with a 99% confidence level. 20.10 20.05 20.025 20.01 20.005 1.282 1.645 1.960 2.326 2.576 You may use a calculator or the common z values above! . Round the final answer to two decimal places. Provide your answer below: ()