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 191.7 mg dL mg dL mg a random sample of such levels. The sample has a mean of 190.7 dL -0 O It is unclear which test statistic to use. 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 110, and it is from a non-normally distributed population with a known standard deviation of 19.1. Oz = 0t= (b) The sample has size 14, and it is from a population with a distribution about which we know very little. 2-0 Oz= 01-0 O It is unclear which test statistic to use. and a standard deviation of 18 Explanation Check . We choos X Ⓒ2022 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Cer

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