In a study of cell phone usage and brain hemispheric dominance, an Internet survey was e-mailed to 6988 subjects randomly selected from an online group involved with ears. There were 1292 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 an use the normal distribution as an approximation to the binomial distribution. Identify the null hypothesis and alternative hypothesis. OA. Ho:p>0.2 H₁: p=0.2 OC. Ho: p=0.2 H₁: p<0.2 OE. Ho: p<02 H₁: 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.) Because the P-value is the significance level. the null hypothesis. There is CID OB. Ho: p=0.2 H₂:p>0.2 OD. Ho: p=0.2 H₁: p0.2 OF. Hop#02 H₁: p=0.2 evidence to support the claim that the return rate is less than 20%.

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