David's percentage of free throws made in the first half is 50%, while gregs is 40%. during the second half, david makes 49% free throws and greg makes 48%. a student who believes that david must've scored a better free throw percentage for the entire game may be falling victim to what error?

a) simpsons paradox
b) lurking variables
c) confounding variables
d) extreme extrapolation

Lorenzo ate 2/5 of his bag of almonds. his 4 friends ate equal shares of the remaining bag of almonds?

The perimeter of a triangle is 69 cm. the first is 5 cm shorter than the second side. the third side is twice as long the first side. find the length of each side

Four airplanes carrying a total of 400 passengersarrive at the detroit airport. the airplanes carry, respectively,50, 80, 110, and 160 passengers. a) one of the 400 passengers is selected uniformly at random. let x denote the number of passengers that were on theairplane carrying the randomly selected passenger. find var(x)for x as given in the problemb) one of the 4 airplane drivers is also selected uniformly atrandom. let y denote the number of passengers on the chosen driver’s airplane. find var(y) for y as given in the problem