1. What are the assumptions/requirements for performing the Chi-Square Test for Independence?
2. The table below is from a study conducted with the stated objective of addressing cell phone safety by understanding why people use a particular ear when speaking on a cell phone. The goal was to determine whether the ear choice is associated with auditory or language brain hemispheric dominance. Assume that one wants to test the claim that handedness and cell phone ear preference are independent of each other. Based upon the data provided in the chart, can you perform a Chi-Square Test for Independence? Why or why not?
Right Ear Left Ear Preference
Right-Handed 410 170 37
Left-Handed 16 45 7