The table below shows the weights, in pounds, of seven subjects before and after following a particular diet for two months. Subject          A          B          C          D          E          F          G Before          186      153      170       151      194      166       156 After             179      144      168       156      180      168       144 At the 1% significance level, do the data provide sufficient evidence to conclude that the diet is effective in reducing weight? Present boxplots to support the conclusion.

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