Sample Mean Distribution (Edexcel A-Level Mathematics): Quizzes

$N\left(\mu, \frac{\sigma^2}{n}\right)$

$1$

No change in mean (default position)

$H_1: \mu > 21$

$2.5\%$

Where we reject $H_0$ if observation lies

Reject $H_0$ (0.0334 < 0.05)

$\mu$

$\bar{X} \sim N\left(5, \frac{\sigma^2}{n}\right)$

p-value