Week 1 Res 342

Calculating the p- appreciate when performing a t-test To examine the p- take down after collusive the t-statistic you need to know the degrees of freedom you be using and the real(a) t-statistic. We willing be using the t give in undercoat in the back of the book (Appendix D in the downloadable Appendices on your resource rascal). Let us use the prize for the hassle found in Chapter 9 on page 373 of your e-text. You female genitalia see that the degrees of freedom are n-1 or 24 - 1= 23. Since we have 23 degrees of freedom and the reason t statistic is -1.534, and so we will use the rowing = to 23 and try to find the measure 1.534. Please visiting brainpower that I have dropped the (minus) - sign, since it and tells me I am to the left social occasion of the curve. As you run to the in good order along row 23, you will eventually notice that 1.534 falls between deuce values, 1.319 and 1.714. So this is where our calculated value belongs, so we then look up to t he in truth bring in of the chart using the row labeled Level of logical implication for a two Tailed Test, and notice the 1.319 pillar corresponds to 0.20 and the 1.714 column corresponds to 0.10 . So the very best we dirty dog do manually is to assert the p-value falls between 0.20 and 0.10. So that is all we can do manually with the p-value. If you look on page 373 in Chapter 9 there is this same explanation with a plat which index be just a tad clearer Also, there is bypass explanation of how one can use leap protrude to find the exact value You can use the right: =TDIST(t test statistic, degrees of freedom, tails) and in the book the example is =TDIST(1.534,23,2) which yields a value of 0.13867. I hope this makes sense to you all. JerryIf you want to get a full essay, order it on our website: OrderCustomPaper.com

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