1.78 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 is the population?

b. What is the sample?

c. Is this a judgment sample or a probability sample?