A machine that is programmed to package 1.90 pounds of cereal is being tested for its accuracy. In a sample of 64 cereal boxes, the sample mean filling weight is calculated as 1.94 pounds. The population standard deviation is known to be 0.15 pound. a-1. Identify the relevant parameter of interest for these quantitative data. multiple choice 1 The parameter of interest is the proportion filling weight of all cereal packages. The parameter of interest is the average filling weight of all cereal packages.