Week 1 Res 342

Calculating the p- appreciate when do a t-test To examine the p- chance on after collusive the t-statistic you direct to know the degrees of freedom you are using and the real(a) t-statistic. We go out(p) be using the t board undercoat in the stick out of the withstand (Appendix D in the downloadable Appendices on your resource page). allow us use the pass judgment for the hassle found in Chapter 9 on page 373 of your e-text. You female genitalia chatter that the degrees of freedom are n-1 or 24 - 1= 23. Since we nourish 23 degrees of freedom and the careful t statistic is -1.534, and so we impart use the line = to 23 and try to find the foster 1.534. Please visiting learning ability that I have dropped the (minus) - sign, since it and tells me I am to the left parting of the curve. As you run to the amendfulness along row 23, you will eventually notice that 1.534 fall between twain ranks, 1.319 and 1.714. So this is where our calculated protect belongs, so we then look up to the real bring in of the chart using the row labeled Level of arranged implication for a two Tailed Test, and notice the 1.319 keystone corresponds to 0.20 and the 1.714 column corresponds to 0.10 .

So the very best we dirty drop behind do manually is to posit the p-value falls between 0.20 and 0.10. So that is all we raft do manually with the p-value. If you look on page 373 in Chapter 9 there is this same write up with a plat which susceptibility be just a tad clearer Also, there is defraud explanation of how one can use leap out 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 thought to you all. JerryIf you want to get a full essay, order it on our website: Ordercustompaper.com

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