USA Today, in a December 2004 article titled "There's no place like work for the holidays," presented the results of a study of 600 full-time U.S. workers done by Penn Schoen & Berland Associates. Results revealed that 33% of the respondents were taking no time off during the holidays. Of those surveyed, 28% reported taking 1 to 2 days off during the holidays.
a. What ids the population?
b. What is the sample?
c. Is this a judgment sample of a probability sample?