The diagram below shows the percentage of people attending a football game who were supporters of either the home team or the visiting team. If the total number of people attending the game was 64,000, how many people were supporters of the home team?

An energy drink company claims that its product increases students' memory levels. to support its claims, the company issues advertisements claiming that 8 out of 10 people (chosen randomly from across the country) who tried their product reported improved memory. the missing component in this study is a .