Sample size n: 20 True mean μ: 52 Null hypothesis H₀: μ₀ = Std deviation σ: 8 Significance α:

No significant difference

Test typeOne-sample t

t statistic—

Degrees of freedom—

p-value—

Effect size (d)—

95% CI—

Power (1−β)—

t = (x̄ − μ₀) / (s/√n)