A poll of 1172 teens aged 13 to 17 showed that 55% of them have made new friends online. Use a 0.01 significance level to test the claim that half of all teens have made new friends online. Use the P-value normal distribution as an approximation to the binomial distribution. Let p denote the population proportion of all teens aged 13 to 17 who have made new friends online. Identify the null and alternative hypotheses. Ho : P = 0.5 H1 : p * 0.5 (Type integers or decimals. Do not round.) Identify the test statistic. z= (Round to two decimal places as needed.)