Question

Samples of three different species of amphibian (frog, toad and salamander) were collected and dissected and the number of parasites found within each was counted and recorded. The researchers are interested in determining whether the distribution of parasites across species is different. The number of parasites within each sample was counted and recorded.

Salamanders Frogs Toads 1 Сл 5 14 3 4 10 3 8 7 3 2 7 5 1 7 16 2 8 14 2 4 4 8 4 10 6 7 2

Answer 1

Ans number of species of amplubicon : 3 Null hypother's ! There is no significant difference between the three mean ie ui= Ma=uz Alternative hypothesis. There is a significant difference betwe en the three mean ie atleast one of them ig differentie vit, mifu, Kruskal wallis t Test Test Statistic C 2 & T ] -31071) HE 12. nanti) 0; CE Sum of sample sizes for all sample number of Sample Sum of sanks size of the sth gampoe T Salamanders Sample size (ni)= 11 Foogs (na) = 9 Toaols cna)=9 cs canned with CamScanner

Rank Salamanders Total = 20315 20315 -185 Average rank = 131 : 14.56 Frogs average rank =- a (3) Toad querage gark = 100.5 11.1667 ੧ 4) Test Stat'esti'o H = 12 crucnti) c)-3(+1) t H=00197*6793.778-90 3.773 HE 5 pualue = 0'1526? F0.15a E Pualue>ool CS Scanned with CamScanner