9709/62 · May/June 2025

Use a dice to choose at random, then the probability that a difference of two normal times exceeds a value.

Find a sample mean from data using an unbiased estimate of variance.

Poisson probability in terms of e, and the value of n making two probabilities equal.

Work back from the width of a confidence interval to possible sample proportions.

Test a normal mean, state an assumption and find the smallest significant sample mean.

Approximate binomial and Poisson probabilities with suitable distributions.

Probability density function: find a constant, a parameter from the mean, and the median.

Binomial test on the chance of rolling a six, then Type I and Type II error probabilities.