One-Sample Mean Using t-Distribution

CLT Conditions:

Independent/Random Sample

  • < 10% of the population

Normality

  • If n \ge 30, we can assume the population is normal

t is most frequently used test statistic

t is more accurate for small samples

You only need s, sample standard deviation

Bell-shaped

Symmetric

Hypothesis Test: One-mean T Test

Random Sample

< 10% of population

\ge 30