# Rubric

1. Using a numerical variable, calculate and interpret a confidence interval for the population mean.
• (1 p) Identify and describe the variable,
• (1 p) use t.test() to calculate the mean and confidence interval, and
• (1 p) interpret the confidence interval.
• (2 p) Using plotting code from the last two classes, plot the data, estimate, and confidence interval in a single well-labelled plot.
2. Using a two-level categorical variable, calculate and interpret a confidence interval for the population proportion.
• (1 p) Identify and describe the variable,
• (1 p) use binom.test() to calculate the mean and confidence interval, and
• (1 p) interpret the confidence interval.
• (2 p) Using plotting code from the last two classes, plot the data, estimate, and confidence interval in a single well-labelled plot.

Turn in your master HW file with these sections appended in the appropriate section.