• Discuss when to use different levels of confidence.
• Determine appropriate sample size for a survey.
• Generate and interpret confidence intervals for the population mean and proportions.
• Calculate and understand confidence intervals as related to changes in alpha, n, and standard deviation.
• Understand the need to make estimates.

Let's begin:

Thinking of the many variables tracked by hospitals and doctors' offices, confidence intervals could be created for many of them. What variable might be most helpful in your work to be able to make an interval within which 95% of patients would fall? What would limit the ability to create such an interval?