Test the given claim. Use either the traditional method to hypothesis testing or the confidence interval method. In a study of 420,095 cell phone users, 135 subjects developed cancer of the brain or nervous system. Test the claim that cell phone users develop cancer of the brain or nervous system at a rate that is different from the rate of 0.0340% for people who do not use cell phones. Should cell phone users be concerned about cancer of the brain or nervous system? [3 marks]