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From a population of cereal boxes marked "12 ounces", a random sample of [n=16 boxes] is selected and the contents of each box is weighed. The...

18. From a population of cereal boxes marked “12 ounces”, a random sample of [n=16 boxes] is selected and the contents of each box is weighed. The sample revealed a sample mean [ =11.7 ounces], with a standard deviation [s=0.8 ounces]. Test to see if the population mean [µ] is at least 12 ounces. Use a 0.05 level of significance

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