According to the data in Model 1, how many females fall within the range 146-155 cm tall?

When water freezes, it . contracts expands

Me with these questions image attached

Ronald wants to see if a new shower cleaner works better in removing soap than his old cleaner. he uses the new cleaner on one half of the shower tiles and his old cleaner on the other half. identify the independent and dependent variables in this experiment. enter your answer in the space provided.