Why is the population shape a concern when estimating a mean? What effect does sample size, n, have on the estimate of the mean?

Is it possible to normalize the data when the population shape has a known skew?

Define and discuss confidence intervals. Why are estimations and confidence intervals important? How can you use confidence intervals to establish statistical significance and/or lack of statistical significance?

How does the student's t distribution compare to the normal z distribution? When do you use the student's t-test and when do you use the Z-test?

How can organizations be encouraged to adopt higher ethical standards?

In your opinion, who or what entity should be responsible for encouraging and maintaining higher standards?