statistic and probability -- 2

Am looking for expert who is really good at statistic and probability subject. The topics are Hypothesis and Test Procedures, Z Tests for Hypotheses about a Population Mean, The One-Sample t Test, Basic Properties of Confidence Interval, Large Sample Confidence Interval for a Population Mean
and Proportion, Intervals Based on a Normal Population Distribution. I only need 35 minutes of help by solving 4 problems.