Normal Distribution - Calculations (AQA A-Level Mathematics): Flashcards

$0.5$

Area of infinitely thin strip at $x = k$ is $0$

Median = mean (due to symmetry)

$\sigma$ (standard deviation, not variance)

Normal CD (cumulative distribution)

Lower: $k$, Upper: $999999$

Lower: $-999999$, Upper: $k$

Lower: $a$, Upper: $b$

Proportion or percentage of population

Use normal probability as $p$ in $B(n, p)$