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14. (6 points) A recent study on the effectiveness of new study techniques produced the following grade results 76 80 85 86 86 89 90

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14. (6 points) A recent study on the effectiveness of new study techniques produced the following grade results 76 80 85 86 86 89 90 91 95 99 It is well known this data comes from a skewed distribution and as the sample size is small, use the Wilcoxon Signed Rank Test with 95% confidence to test: Ho : / = 85 HA : / > 85

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