Computing all four joint probabilities (in percent) in a fourfold table based on two randomly-generated conditional probabilities and one marginal probability. The exercise is a cloze with four numeric answers presented in a list.
Verbatim R input/output:
(Note that the HTML output contains mathematical equations in MathML, rendered by MathJax using ‘mathjax = TRUE’. Instead it is also possible to use ‘converter = “pandoc-mathjax”’ so that LaTeX equations are rendered by MathJax directly.)
library("exams") set.seed(403) exams2html("fourfold.Rmd", mathjax = TRUE) set.seed(403) exams2pdf("fourfold.Rmd") set.seed(403) exams2html("fourfold.Rnw", mathjax = TRUE) set.seed(403) exams2pdf("fourfold.Rnw")