Question

Suppose you're a producer of moonshine and are worried about blinding your customers. You make low quality stuff that contains methanol which damages the optic nerve. You want to test some of your moonshine, but testing it means you can't sell it or use it to get completely wasted. Hence you want to minimize your sampling, but you want to be quite sure the methanol is between 0 and 10 microliters per batch of moonshine. Otherwise your customers may go blind and not buy from you anymore. Being a hard-core business person trained at UWWs College of Business and Economics the thought of losing customers makes you feel physically sick. You conduct a very small sample and find that the mean methanol is 8 microliters with a standard deviation of 6 microliters. How many batches do you need to sample to be 99% sure of the true mean methanol level, and have a confidence interval with no About 109 About 59 About 39 About 9 None of the above

          Suppose you're a producer of moonshine and are worried about blinding your customers. You make low quality stuff that contains methanol which damages the optic nerve. You want to test some of your moonshine, but testing it means you can't sell it or use it to get completely wasted. Hence you want to minimize your sampling, but you want to be quite sure the methanol is between 0 and 10 microliters per batch of moonshine. Otherwise your customers may go blind and not buy from you anymore. Being a hard-core business person trained at UWWs College of Business and Economics the thought of losing customers makes you feel physically sick. You conduct a very small sample and find that the mean methanol is 8 microliters with a standard deviation of 6 microliters. How many batches do you need to sample to be 99% sure of the true mean methanol level, and have a confidence interval with no  About 109  About 59  About 39  About 9  None of the above

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