AHL4.16 — Confidence intervals for a mean

Mathematics: Applications and Interpretation · SL / HL · syllabus-mapped notes

AIAHL4.16.1
Confidence intervals: normal vs $t$
Use the normal distribution when $\sigma$ is known and the $t$-distribution when it is unknown.
AIAHL4.16.2
Finding and interpreting a confidence interval
Reading a GDC interval and stating what the confidence level means.

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