Discussion:
Choose a variable. Before collecting the data, decide what a likely average might be, then complete the following:
Write a brief statement of purpose of the study
Define the population
State the hypotheses for the study
Select an a value
State how the sample was selected
Show the raw data
Decide which statistical test is appropriate and compute the test statistic (z or t). Why is the test appropriate?
Find the critical values(s)
State the decision
Summarize the results.