Chapter 5, Problem 5.86RE

To determine

To explain what answers does the Times give to each of the questions.

Explanation of Solution

The answers to the questions are as;

Who carried out the survey?: New York Times/CBS News Poll

What was the population?: Adults in the US

How was the sample selected?: A sample of telephone numbers was randomly selected from $42,000$ active residential exchanges in the country. The exchanges were chosen so that each region of the country was represented proportionally to its population. In each exchange, random digits were used to compile a complete telephone number.

How large was the sample?: A total of $1,067$ adults were surveyed.

What was the response rate?: This was not specified.

How were the subjects contacted?: By phone.

When was the survey conducted?: March $15,2008\text{ to March }18,2008$

What were the exact questions asked?: What proportion of MLB players do you think use steroids( $50\%\text{ or 25\%}$ )?