Question: Brett is performing a hypothesis test in which the population mean is 310 and the standard deviation is 20. His sample data has a

Brett is performing a hypothesis test in which the population mean is 310 and the standard deviation is 20. His sample data has a mean of 295 and a sample size of 50. Which of the following correctly depicts the z-statistic for Brett's data? O -5.30 O-0.11 4.28 6.27

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