Assignment 2: T-Test

By **Wednesday, March 26, 2014**, post your assignment to the** M2: Assignment 2 Dropbox**.
Any conclusion drawn for the t-test statistical process is only as good
as the research question asked and the null hypothesis formulated.
T-tests are only used for two sample groups, either on a pre post-test
basis or between two samples (independent or dependent). The t-test is
optimized to deal with small sample numbers which is often the case with
managers in any business. When samples are excessively large the t test
becomes difficult to manage due to the mathematical calculations
involved.

Calculate the “t” value for independent groups for the following data
using the formula presented in the module. Check the accuracy of your
calculations. Using the raw measurement data presented above, determine
whether or not there exists a statistically significant difference
between the salaries of female and male human resource managers using
the appropriate t-test. Develop a research question, testable
hypothesis, confidence level, and degrees of freedom. Draw the
appropriate conclusions with respect to female and male HR salary
levels. Report the required “t” critical values based on the degrees of
freedom. Your response should be 2-3 pages.

**Salary Level** |

**Female HR Directors** | **Male HR Directors** |

$50,000 | $58,000 |

$75,000 | $69,000 |

$72,000 | $73,000 |

$67,000 | $67,000 |

$54,000 | $55,000 |

$58,000 | $63,000 |

$52,000 | $53,000 |

$68,000 | $70,000 |

$71,000 | $69,000 |

$55,000 | $60,000 |

*Do not forget what we all learned in high school about “0”s |