Question: A Newspaper reporter wants to determine public opinion about a proposed tax increase. Ide nt i f y t he Sam p li ng M e t hod then D e t e r mi ne whether each of the following would give a bia s ed or u n bia s ed sample on which to base an inference and explain your response.

1. He stands in front of City Hall and asks opinion of the first 20 people who come along?
2. He goes to an afternoon major league baseball game and asks the first 20 people seated in the box seats who will speak to him?
3. He telephones the names on page 32 of the resident telephone directory until he secures 20 responses
4. He asks readers of his column to mail in their views

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