Description Usage Arguments Value Author(s) See Also

This is an auxiliary function of 'sim_sample_pow'. It is conducting a study with a internal pilot study and normally distributed data. The calculated value of the test statistic is compared directly with the corresponding quantile of the t-distribution.

1 2 |

`n1` |
Number. Size of the internal pilot study. |

`N0` |
Number. Size of the originally planned sample size. |

`sd_ber` |
Number. Actual standard deviation in the data. |

`delta` |
Number. Expectation difference of two samples. |

`Delta` |
Number. Relevant difference of expected values in the alternative hypothesis. |

`test` |
Number. What type of hypothesis test should be performed. One-sided (Superiority/ |

`alpha` |
Number. Desired alpha-level of the test. |

`beta` |
Number. Acceptable beta error of the test. |

`adj` |
Logical. Should the one-sample variance, calculated in the internal pilot study, be adjusted? |

`rule` |
Logical. Should the sample size adjustment rule be applied by Wittes and Brittain? |

`nbound` |
Number. Upper limit of the sample size. |

This function returns a value if the simulation study rejects (1) or can not reject (0) the

null hypothesis.

Csilla van Lunteren

Embedding an R snippet on your website

Add the following code to your website.

For more information on customizing the embed code, read Embedding Snippets.