Question

m/mail/u/0/?tab rm0#inbox/FMfcgxwDsHt 25. An Archaeopterya is an extinct animal having feathers like a bird but also having very prominent teeth. Five fossilized speciment of this creature have been found with the lengths of the femur (a leg bone) plotted against the lengths of the humerus (a bone in the upper arm): Femur 38 56 59 64 74 Humerus 41 63 70 71 76 Archeologists have long felt that there should be a positive linear correlation between the lengths of the femur and the lengths of the humerus in these extinct creatures, What do the above data suggest? A positive correlation is likely because lengths of bones in any animal are always positively correlated. (B) A positive correlation is likely because the above test yields a P-value of 0039 (c) A positive correlation is likely because the above test yiclds a P-value of 0078 (D There is no significant positive correlation at the 1% level of significance as the P-value is 039 (E) There is no significant positive correlation at the 5% level of significance as the P-value is .078.

Answer 1

Here x Femur Y H4Merus 57.6 321 64.2 Coeh dt correl ation. s x57.6 x64.2 (9261 7414-5x576) es-x4) O.9749 The test statistic is 0.9749-2 t 7.58S2 Pratrefts7 P-value p Dt7 7.5P5 0.0039 Ans (8) A posituecorrelaton s1tbel y because the above test yfeld af-ualue is o.00 39