5. TAKRA Pow DER aix Thu. proredures for sintoring wapper arr ompared by testing

Question

5. TAKRA Pow DER aix Thu. proredures for sintoring wapper arr ompared by testing each procedure on different types of powder. The measuremen of intertel is the porosity (verornat volumes dur to va as) of endi sprciuen Low Prmeel 8 22 26 2n 26 24 25 Use a paired trst rost e claim that dure ll producxs higher uueaa porasity than Procenizre 1. ller the al the D.05 lovel, What is the t statistic and critical value for your test? (h) 0.349 1.796 a) NJ, 349, 2.016 (c) 0.16g, 1.812 (d) 0.349, 1.943 319 USEPUL FORMULAS

Explanation / Answer

from above

test stat =0.349

and at 0.05 level and 5 degree of freedom critcal value of right tailed t =2.015

therefore option A is correct

Proc 1 Proc 2 difference(d) 21 23 2 27 26 -1 18 21 3 22 24 2 26 25 -1 19 16 -3 mean 0.333 std deviaition 2.3381 std error= std dev/(n)^(1/2) 0.9545 t stat= (d-0)/std error 0.3492

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