a satlwater solution for an aquarium calls for 35 parts salt 100 parts water tareq used 7 tablespoons of 3 salt and 200 tablespoons of water

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 .