Apollster interested in opinions on gun control divided a city into city blocks, then surveyed the third house to the west of the southeast corner of each block. if the house was divided into apartments, the westernmost ground floor apartment was selected. the pollster conducted the survey during the day, but left a notice for those who were not at home to phone her so she could interview them. which type of sampling plan was used?

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

[15 points, algebra 2]simplify the complex fraction and find the restrictions.

The weight v of an object on venus varies directly with its weight e on earth. a person weighing 120 lb on earth would weigh 106 lb on venus. how much would a person weighing 150 lb on earth weigh on venus?