We want to perform a hypothesis test of the statement that the population mean daily profit of a convenience store is more than490. So we record the daily gain or a random sample of days. The sample has a mean of498and a standard deviation of 77. or each of the following sampling cases, choose an appropriate test statistic for the hypothesis test on the population mean. Then calculate that statistic. Round nswers to two decimal places. (to) The sample has size 16,and comes from a population that follows a normal distribution with an unknown standard deviation. Oz: -0 O you O It is not clear which test statistic to use. (b) The sample has a size of 100, and comes from a population that does not follow a normal distribution with a known standard deviation of 77. Oz you It is not clear which test statistic to use.

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