To achieve ME ≤ m for μ at 95% CI (σ known), n ≥

(1.96σ/m)² n ≥ (z·σ/m)² for the desired ME with σ known.

Constructing a Confidence Interval for a Population Mean

AP Statistics· difficulty 4/5

To achieve ME \leq m for μ at 95% CI (σ known), n \geq

Explanation

n \geq (z*\cdotσ/m)² for the desired ME with σ known.

Want 10 more like this — adaptive to your weak spots?