a student would like to estimate the average number of text messages sent by cell - phone users in a day…

a student would like to estimate the average number of text messages sent by cell - phone users in a day. which of the following methods would provide a voluntary response sample?\n○ a survey of adults leaving a movie theater\n○ a survey of all students in a statistics class\n○ a text poll provided during a nightly news broadcast\n○ a survey of every 10th person leaving a large shopping mall

a student would like to estimate the average number of text messages sent by cell - phone users in a day. which of the following methods would provide a voluntary response sample?\n○ a survey of adults leaving a movie theater\n○ a survey of all students in a statistics class\n○ a text poll provided during a nightly news broadcast\n○ a survey of every 10th person leaving a large shopping mall

Answer

Answer:

C. a text poll provided during a nightly news broadcast

Brief Explanation:

A voluntary - response sample is one where individuals decide on their own to participate. In a text poll during a news broadcast, people choose whether to respond. The other options are surveys where individuals are selected or approached, not self - selected as in a voluntary response.