Card 1 of 20
If X∼N(μ,σ2)X\sim N(\mu,\sigma^2)X∼N(μ,σ2), what is the distribution of the sample mean for a random sample of size nnn?
A
Do not reject H0H_0H0.
B
There is insufficient evidence against H0H_0H0; it is not proved true.
C
α2\frac{\alpha}{2}2α in each tail.
D
Xˉ∼N(μ,σ2n)\bar X\sim N\left(\mu,\frac{\sigma^2}{n}\right)Xˉ∼N(μ,nσ2)
Card 1 of 20
2.5.5 Hypothesis test for the mean of a normal distribution (A-level only) Flashcards
20 flashcards on OCR A Level Maths 2.5.5 Hypothesis test for the mean of a normal distribution (A-level only): the key formulae, methods and definitions you need to recall for Paper 1, Paper 2 and Paper 3.