Q4/A/ A particular brand of diet margarine was analyzed to determine the level of polyunsaturated fatty acid (in percent). A sample of six packages resulted in the following data: 16.8, 17.2, 17.4, 16.9, 16.5, and 17.1. It is important to determine if the mean is not equal to 17.5, use a = 0.01. (Applying hypothesis test approach)

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