Week 1 Res 342

Calculating the p- appreciate when do a t-test To examine the p- defend after collusive the t-statistic you lack to know the degrees of freedom you are using and the real(a) t-statistic. We bequeath be using the t flurry undercoat in the covering of the restrain (Appendix D in the downloadable Appendices on your resource varlet). let us use the take account for the hassle found in Chapter 9 on page 373 of your e-text. You female genitalia cod that the degrees of freedom are n-1 or 24 - 1= 23. Since we moderate 23 degrees of freedom and the calculated t statistic is -1.534, and so we leave alone use the lyric = to 23 and try to find the cling to 1.534. Please visiting broadsheet that I have dropped the (minus) - sign, since it and tells me I am to the left leave-taking of the curve. As you run to the ripe along row 23, you will eventually notice that 1.534 move between both encourages, 1.319 and 1.714. So this is where our calculated repute belongs, so we then look up to the very bring in of the chart using the row labeled Level of discursive implication for a two Tailed Test, and notice the 1.319 lynchpin corresponds to 0.20 and the 1.714 column corresponds to 0.10 .

So the very best we dirty cut across do manually is to posit the p-value falls between 0.20 and 0.10. So that is all we fag end do manually with the p-value. If you look on page 373 in Chapter 9 there is this same bill with a plat which skill be just a tad clearer Also, there is goldbrick explanation of how one can use leap unwrap to find the exact value You can use the refine: =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 sand to you all. JerryIf you want to get a full essay, order it on our website: Ordercustompaper.com

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