as they walk along the sidewalk joan and grace are trying to jump over all the cracks if they pass 8 houses and there are 14 cracks in the side walk in front of each house how many cracks altogether will joan and grace try to jump over. please help show work if possible

Apsychology student wishes to investigate differences in political opinions between business majors and political science majors at her college. she randomly selects 100 students from the 260 business majors and 100 students from the 180 political science majors. does this sampling plan result in a simple random sample? why or why not? no, because each group of 200 students in the sample does not have the same chance of being selected. yes, because each group of 200 students in the sample has the same chance of being selected. no, because each individual student does not have an equal chance of being selected. yes, because each individual student has the same chance of being selected.