Across nine European countries in a large-scale survey, people had a hard time identifying signs of a stroke or heart attack. The survey included 10,228 inhabitants of Austria, France, Germany, Italy, the Netherlands, Poland, Russia, Spain, and the United Kingdom. Participants ages ranged from 14 to 98. Of those surveyed, less than half (4910) linked arm or shoulder pain to heart attacks. Use StatKey to find and interpret a 99% confidence interval for the proportion of Europeans (from these nine countries) who can identify arm or shoulder pain as a symptom of a heart attack. Can we be 99% confident that the proportion is less than half?