Mathematics homework help: In a study of cell phone usage and brain hemispheric dominance, an Internet survey was e-mailed to 6999 subjects randomly selected from an online group involved with ears. There were 1305 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.
Part 1.) Identify the null hypothesis and alternative hypothesis.
Part 2.) Identify the number of events____, the number of trials___, the claimed population proportion___, and the significance level ____to be used in technology.
Part 3.) The test statistic for this hypothesis test is_____ (Round to two decimal places as needed.)
Part 4.) The P-value for this hypothesis test is_____(Round to three decimal places as needed.)
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