英语翻译成中文,不要用软件随便拉一下,十分感谢,在线等答案.地名之类的名字不用翻译.

英语翻译成中文,不要用软件随便拉一下,十分感谢,在线等答案.地名之类的名字不用翻译.
1. The number of meals charged on the bill does not necessarily indicate the number of people dined.
2. The argument contains no information concerning the method used by the researchers to analyze the amount of tips, thus the reliability of the result is open to doubt. (are the respondents being forthright?)
3. The author does not inform us the total amount of money charged per person of people dining alone and those dining in groups, waiters could still receive more tips if people dinning in groups expend significantly more money per person on their meals.