Show working, thanks!

3 ) For the questions below, identify the variables and determine which questions are stated as cause-and- effect questions. (Hint: Your intuition might suggest that two variables have a cause-and-effect relationship, but pay attention to the wording of the question to determine if the researchers plan to gather evidence of a cause-and-effect relationship or not.) Variables Experiment or Research Question Observational Study? Does meditation promote better concentration? Does talking on a hands-free cell phone reduce drivers' reaction times? Is hands-on cell phone use associated with a higher incidence of accidents? Is maternal smoking correlated with low birth weight? Do women who take painkillers during pregnancy have a higher rate of miscarriages? Does sex education lower the incidence of teenage pregnancy