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CAIE A-Level Biology 17.1.4 T-Test for Comparing Two Means

Practise calculating a t-value from means, standard deviations and sample sizes, then compare it with a critical value to decide whether two sample means differ.

Syllabus
2028–2030
Course
Biology 9700
Level
A2

Exam points

  • substitute means, standard deviations and sample sizes into the t-test formula
  • compare t with the critical value and accept or reject the null hypothesis

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