A production process is checked periodically by a quality control inspector. The inspector selects simple random samples of 30 finished products and computes the sample mean product weight xbar. If test results over a long period of time show that 5% of the xbar values are over 2.1 pounds and 5% are under 2.9 pounds, what are the mean and the standard deviation for the population of products produced with this process? Use the z-table. Mean (to 1 decimal): Standard Deviation (to 2 decimals):