The increasing popularity of online shopping has many consumers using Internet access at work to browse and shop online. In fact, the Monday after Thanksgiving has been nicknamed "Cyber Monday" because of the large increase in online purchases that occurs on that day. Data from a large-scale survey by a market research firmwas used to compute estimates of the percent of men and women who shop online while at work. The resulting estimates probably won't make most employers happy42% of the men and 32% of the women in the sample were shopping online at work!

Are the estimates given computed using data from a sample or for the entire population?

a. The estimates were computed using data from a sample.

b. The estimates were computed using data for the entire population.