(Data set from "The Weight of Euro Coins: Its Distribution Might Not Be As Normal As You Would Expect," Ziv Shkedy, Marc Aerts, and Herman Callaert, Journal of Statistics Education, Volume 14, Number 2 [2006], used by permission of the authors.) The 1 Euro coin has a silver-colored inner core and a yellow outer ring. The center core is made from a copper-nickel alloy, while the outer ring is made of nickel brass. The coins are minted through a series of steps that combine two separate metal disks into the final coin that should weigh 7.5 grams. (You can watch a video of the process to make a 2 Euro coin at https:// www.youtube.com/watch?v=rFDsSMDeV3w.) You are a quality control technician in the mint and are responsible for ensuring that the coins meet the official weight and size specifications. As part of this work, you have weighed 2,000 coins from eight different production runs to determine whether the machines producing the metal disks are operating to specifications.