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A manufacturer of cheese filled ravioli supplies a pizzarestaurant chain. Based on data collected from its automaticfilling process, the amount of cheese inserted into the ravioli isnormally distributed. To make sure that the automatic fillingprocess is on target, quality control inspectors take a sample of25 ravioli. The sample of 25 ravioli had a sample mean weightof 15 grams with a standard deviation of 1.5 grams. The 90%confidence interval for the true mean amount of cheese fillingis