To compress spring 1 by 0. 20 m takes 150 j of work. Stretching spring 2 by 0. 30 m requires 210 j of work.

Asociologist chose 300 students at random from each of two schools and asked each student how many siblings he or she has . the result are shown in the table below. there are a total of 2,400 students at lincoln school and 3,300 students at washington school .what is the median number of siblings for all the students surveyed ? a)0b)1c)2d)3