It is claimed that a new diet will reduce a person's weight by 4.5 kilograms on the average in a period of 2 weeks. The weights of 7 women who followed this diet were recorded before and after a 2-week period. Test a manufacturer's claim by computing a 95% confidence interval for the mean difference in the weight. Assume the differences of weights to be approximately normallydistributed.

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Woman Weight Before Weight After 58.5 60.3 61.7 69.0 60.0 54.9 3 4 58.1 62.1 58.5 64.0 59.9 56.7 54.4 1234 567