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We want to conduct a hypothesis test of the claim that for middle aged adults...

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We want to conduct a hypothesis test of the claim that for middle aged adults the population mean of their cholesterol levels is less than 191 6 mg We choose dL mg a random sample of such levels The sample has a mean of 193 6 and a standard deviation of 19 5 dL mg dL For each of the following sampling scenarios choose an appropriate test statistic for our hypothesis test on the population mean Then calculate that statistic Round your answers to two decimal places a The sample has size 10 and it is from a normally distributed population with an unknown standard deviation 0 0 0 32 OIt is unclear which test statistic to use b The sample has size 19 and it is from a population with a distribution about which we know very little 0 0 ot 0 It is unclear which test statistic to use

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