In a study of cell phone usage and brain hemispheric dominance, an Internet survey was e-mailed to 6997 subjects randomly selected from an online group involved with ears. There were 1331 surveys returned. Use a 0.01 significance level to test the claim that the return rate is less than 20%. Use the P-value method and use the normal distribution as an approximation to the binomial distribution. H: p 0.2 H: p=0.2 The test statistic is z = (Round to two decimal places as needed.) The P-value is (Round to three decimal places as needed.) H: p>0.2 OF. Ho: p 0.2 H: p=0.2 Because the P-value is the significance level, the null hypothesis. There is evidence to support the claim that the return rate is less than 20%.