n a study of cell phone usage and brain hemisphericdominance, an Internet survey wase-mailed to 6964 subjects randomly selected from an online group involved with ears. There were 1295 surveys returned. Use a 0.01 significance level to test the claim that the return rate is less than20%. Use theP-value method and use the normal distribution as an approximation to the binomial distribution. Find P Value, Z test.