K In a study of cell phone usage and brain hemispheric

Last updated: 8/14/2023

K In a study of cell phone usage and brain hemispheric dominance an Internet survey was e mailed to 6969 subjects randomly selected from an online group involved with ears There were 1320 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 Identify the null hypothesis and alternative hypothesis A Ho p 0 2 H p 0 2 OC Ho p 0 2 H p 0 2 OE Ho p 0 2 H p 0 2 The test statistic is z 0 Round to two decimal places as needed OB Ho p 0 2 H p 0 2 OD Ho p0 2 H p 0 2 OF Ho p 0 2 H p 0 2