Final answer:
In the given survey on substance abuse, the underlined value represents the proportion of full-time college students aged 18 to 22 who reported using alcohol within the past month. This value is a statistic.
Step-by-step explanation:
In the given survey on substance abuse, the underlined value – 66.4% – represents the proportion of full-time college students aged 18 to 22 who reported using alcohol within the past month. In this context, the underlined value is a statistic because it is based on a sample of respondents from the survey.
A parameter, on the other hand, would refer to a value that represents the entire population under study (in this case, all full-time college students aged 18 to 22 in the country).