a. Step One: Identify the parameter you are
trying to estimate, your confidence level and
any claims you will assess with your interval (Ha
is the claim).
b. Step Two: Check that the three Conditions for
a z-interval are satisfied; Random Sampling,
Independent Trials, and Large Counts. Provide
details and calculations as necessary.
c. Step Three: Calculate the Confidence
Interval by first calculating the statistic,
Standard Error and Critical Value so that you
can calculate [the Confidence Interval is:
statistic +/- (critical value)(standard error of
statistic)].
d. Step Four: Conclude by interpreting the
confidence interval in context and assess claims.