Computing the 2-sided confidence interval at 95% level for the mean based on a random sample. The exercise is a cloze with two numeric answers for the lower and upper bound of the confidence interval, respectively. Using the 'verbatim' clozetype for Moodle, the exercises yields 100% of the points for the correct solution based on t quantiles but still 50% for a partially correct solution based on normal quantiles.
Verbatim R input/output:
(Note that the HTML output contains mathematical equations in MathML. It is displayed by browsers with MathML support like Firefox or Safari - but not Chrome.)
library("exams") set.seed(1090) exams2html("confint3.Rnw") set.seed(1090) exams2pdf("confint3.Rnw") set.seed(1090) exams2html("confint3.Rmd") set.seed(1090) exams2pdf("confint3.Rmd")