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.