Parameters | T | T |

Mean | 428.67 | 455.925 |

Variance | 32,456.37 | 22,498.27 |

Observations | 20 | 20 |

df | 19 | |

t Stat | −4.0329 | |

P (T ≤ t) one-tail | 0.000355 | |

t Critical one-tail | 1.729133 | |

P (T ≤ t) two-tail | 0.000711 | |

t Critical two-tail | 2.093024 |