Francesca is knitting a scarf. The scarf will be 1/2 meter long. How much does Francesca need to knit each day if she would like to finish the scarf in 2 days?

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 .