understand standardised normal variables (z-values, z-scores) and use these to compare samples
4.4.2.2
recognise features of the graph of the probability density function of the normal distribution with mean 𝜇 and standard deviation 𝜎 and the use of the standard normal distribution
4.4.2.3
calculate probabilities and quantiles associated with a given normal distribution using technology and use these to solve practical problems
