Alice's lawn mower gas tank holds 2.5 gallons. She notices that it is 14 full. To the nearest $0.25, which of these is closest to the cost to fill the tank at $3.50 per gallon? $3.75

$4.25

$5.75

$6.00

$6.50

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 .