The radio is plugged into a socket across from the bath/shower. Mary "accidently" unplugs the radio instead of the dryer and then plugs it back in. The radio is set inside the bathtub near the father's feet, with the cord still outside the tub area. Next the cord is seen being pulled tight by someone (unseen) which pulls the radio into the bath water. From this angle, pulling the radio by its cord would cause it to fall onto the bathroom floor, not in the tub.
At the beginning of the film, while still driving to their new house, Phillip says to his wife in the car
about them having this new house, and says I've got this new job" implying they are relocating to a completely new area/state from where they were living.
Yet further into the film (around 7.55) as Mary looks out the upstairs bedroom window at the front of the house after hearing her name being called and down on to the bottom of the driveway where the accident was supposed to have taken place the previous year killing Jennifer, as shown then in flashbacks to the night of the accident but as they and the Grandmother have never lived in the house before, how could the accident have taken place at the bottom of the driveway.