The data to the right contain the state cigarette tax (in $) for all 20 regions of a country 1.25 1.70 2.51 0.44 1.00 Complete parts (a) and (b). 0.68 3.46 0.55 2.00 0.79 1.60 0.98 0.30 2.23 4.35 0.62 300 178 153 0.87 a. Compute the population mean and population standard deviation for the regional cigarette taxes. The population mean is u = 1.58 (Round to two decimal places as needed. ) The population standard deviation is a = (Round to three decimal places as needed.)