<prompt> Translate the following text to SwahiliCritics of previous Wachter studies claim that they ignore the fact that the Postal Service pays minorities the same as it pays white males.  <response>: Wakosoaji wa utafiti wa Wachter wa awali wanadai kwamba wanapuuza ukweli kwamba Huduma ya Posta hulipa wachache sawa na inalipwa wanaume weupe. 