Foreigners often make some strange mistakes in Chinese when they study the most difficult language--- ---Chinese. We try to analyze typical sentences to correct these errors.

          Nǐ děnɡ shuí rén?
False: 你等谁人
         Nǐ děnɡ shuí?
True: 你等

“谁”是用来咨询人的,可以单独做宾语。“人”多余。
谁 is an interrogative pronoun referring to a person. It can act as an object indepently, so 人 is redundant.