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systolic blood pressure levels above 120 mm hg are considered to be high. for the 100 systolic blood pressure levels listed in the accompanying data set, the mean is 122.96000 mm hg and the standard deviation is 15.64371mm hg. assume that a simple random sample has been selected. use a 0.01 significancd level to test the claim that sample is from a population with a mean greater than 120 mm hg.


 Identify the test statistic

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