Review Sheet for Midterm I

The mean weight for a simple random sample of 12 Hostess Twinkie snack cake packs is found to be 15.96 oz. The overall population standard deviation of a pack of Hostess Twinkies is 0.15 oz. The package promises a weight of 16 oz. Is the true population mean weight of a Twinkie package different from 16 oz? Use a 5% significance level. ................
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