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Determine to the 95% Confidence Level if the two wastewater treatment technologies are significantly different. For each technology, samples were sampled from the discharge to determine the Biological Oxygen Demand (BOD) of the treated water. You will need to perform the F-test to choose the correct t-test to complete the analysis. Clearly write the Null and Alternative hypothesis for all tests used, and clearly state the results of all statistical tests used. Assume the sample size is large enough that the B- error does not need to be checked. Technology 1: Mean 15.8, Std. Dev. 1.21, n 25 Technology 2: Mean 18.5, Std. Dev. 1.52, n-32 To answer this statistical question, you will need to do the two-sample t-test for independent samples: Use the F-test to determine which two-sample 1-test to use (equal variance or unequal variance): F-test Which Tailed? large small Test Statistic = DoF- DoF Critical Value= Accept or Reject Ho Which t-test should be used?
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TR test for unequal variance should be used

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