1. Your claim results in the following alternative hypothesis: H1: p> 62% which you test at a significance level of =.005. Find the critical value, rounded to four decimal places. z=

2. Your claim results in the following alternative hypothesis: H1: > 172 which you test at a significance level of =.001 and a sample size of 50. You do NOT know the population standard deviation, . Find the critical value, rounded to four decimal places. t=

3. You are performing a two-tailed test. If=.10, find the positive critical value, to four decimal places. z/2=