Final answer:
Determining the percentage of people who have held an ice hockey puck requires extensive survey data, which is not provided. Indirect information from a related demographic suggests that certain groups, like children in ice-skating classes, may have a higher likelihood of having done so.
Step-by-step explanation:
The question "What percentage of people have held an ice hockey puck in their hands?" does not have a straightforward answer as it would require extensive survey data that encompasses the entire global population's interaction with ice hockey pucks. However, using the provided information, we can infer some related data for a specific demographic.
For example, we know that "With 92 percent confidence, we estimate the proportion of girls, ages 8 to 12, in a beginning ice-skating class at the Ice Chalet to be between 72 percent and 88 percent." If we were to assume that these ice-skating classes also incorporate some form of hockey as part of the curriculum, or that children in these classes have an increased likelihood of exposure to ice hockey pucks, then we could estimate that this group has a higher probability of having handled an ice hockey puck.
However, to establish a more accurate percentage encompassing a broader population would require specific statistical studies on the subject.