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4.3.2 Statistical hypothesis testing (A-level only)

A claim says the population mean has decreased from μ0\mu_0μ0​. What is H1H_1H1​?

A

It shows insufficient evidence against H0H_0H0​, not proof that H0H_0H0​ is true.

B

X‾∼<strong>N(250,94)</strong>\overline X\sim <strong>N\left(250,\frac94\right)</strong>X∼<strong>N(250,49​)</strong>.

C

For a two-tailed test with observed z>0z>0z>0, the p-value is 2P(Z≥z)\boxed{2P(Z\ge z)}2P(Z≥z)​.

D

H1:μ<μ0H_1:\mu<\mu_0H1​:μ<μ0​ - a lower-tailed test.

4.3.2 Statistical hypothesis testing (A-level only) Flashcards

  1. A Level
  2. /Maths
  3. /4.3.2 Statistical hypothesis testing (A-level only)

Flashcards for WJEC A Level Maths 4.3.2 Statistical hypothesis testing (A-level only), covering the key formulae, methods and definitions you need to recall for AS Unit 1, AS Unit 2, A2 Unit 3 and A2 Unit 4. 23 cards, matched to the WJEC A Level Maths (1300QS) 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.