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2.5.5 Hypothesis test for the mean of a normal distribution (A-level only)

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​)

2.5.5 Hypothesis test for the mean of a normal distribution (A-level only) Flashcards

  1. A Level
  2. /Maths
  3. /2.5.5 Hypothesis test for the mean of a normal distribution (A-level only)

Flashcards for OCR A Level Maths 2.5.5 Hypothesis test for the mean of a normal distribution (A-level only), covering the key formulae, methods and definitions you need to recall for Paper 1, Paper 2 and Paper 3. 20 cards, matched to the OCR A Level Maths (H240) specification. Recall questions account for roughly 50% of marks at A Level Maths, so these target the marks you can secure before the paper starts.