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# Calculate the Required Sample Size for Comparing Means: For…

## Questions

### Cаlculаte the Required Sаmple Size fоr Cоmparing Means: Fоr a two-sample t-test, the study aims to detect a 5 mmHg difference in blood pressure with a pooled standard deviation of 10 mmHg, a significance level of 0.05, and a power of 80%. Using an approximate formula for sample size:Formula:n = 2 × ( Z α / 2 + Z β ) 2 × σ 2 Effect Size 2 where Z α / 2 = 1.96 and Z β = 0.84