The procedure for testing significance of difference between two means from two different groups is identical to that used in testing two percentages.However,the equations differ because a scale variable is involved.

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The statement is true. While the procedure for testing significance of difference between two means from two different groups may be similar to that used in testing two percentages, the equations for calculating the significance level differ as a scale variable is involved in the former case.

The Procedure for Testing Significance of Difference Between Two Means