In a study of cell phone usage and brain hemispheric dominance, an Internet survey was e-mailed to 6985 subjects randomly selected from an online group involved with ears. There were 1344 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.
ldentify the null hypothesis and alternative hypothesis.
A. H0:p=0.2, H1:p>0.2
B. H0:p<0.2, H1:p=0.2
C. H0:p≠0.2, H1:p=0.2
D. H0:p>0.2, H1:p=0.2
E. H0:p=0.2, H1:p≠0.2