Use this situation to answer the following: Does using a cell phone while driving make an accident more likely? Researchers compared telephone company and police records to find 699 people who owned cell phones and were also involved in an auto accident. Using phone billing records, they compared cell phone use in the period of the accident with cell phone use the same period on a previous day. Result: the risk of an accident was 4 times higher when using a cell phone. 1) This study is v 2) The Explanatory Variable in this study is v 3) An example of a Lurking Variable that might affect the results of this study is v a randomized comparative experiment an experiment, but without randomization a simple random sample an observational study, but not a simple random sample whether or not the subject had an auto accident whether or not the subject was using a cell phone the risk of an accident whether or not the subject owned a cell phone whether or not the subject had an auto accident whether or not the subject was using a cell phone whether or not the subject was talking to a passenger in the car whether or not the subject owned a cell phone