9709/52 · May/June 2023

Probability distribution from a formula with an unknown constant, then mean and variance.

Rain on successive days with dependence: several probabilities.

Back-to-back stem-and-leaf: median, IQR, box plots and choosing an average.

Geometric probabilities, a conditional probability and a binomial “at least”.

Normal probabilities, an unknown standard deviation and the normal approximation.

Selections with restrictions and arrangements with grouping or separation.