Hyenas famously laugh The technical term used by hyena biolo

Hyenas, famously, laugh. (The technical term used by hyena biologists is

Solution

Spectral CV of dominant individual
0.384 0.386 0.252 0.226 0.323 0.287 0.303 0.317 0.277
Once calculated we get the Mean Xd = 0.30611
and SDd2= 0.0029
Spectral CV of subordinate individual
0.507 0.569 0.235 0.415 0.436 0.451 0.399 0.220 0.338
Once calculated we get the Mean Xs = 0.39667
and SDs2= 0.0134
the SE(standard error)= Root Sp (1/n1 + 1/n2)
and Sp= (n1-1)sd2 + (n2-1) ss2 / (n1+n2-2)
Here we use this method because it is a case of small sample(<30) and t-test would be used
Puuitng the values of n1, n2, Sdd and Sds we get the standard error:
SE= 0.045138.....................................................................................................(1)
Now to test whether dominant and subordinate individuals differ in the means of giggle spectral CV
we set the hypothesis as follows
H0: Mu1=Mu2
H1: Mu not equal to Mu2
Assuming the Significance level as 0.05, t0.05, 16dof= +/-2.12
t-Calculated= Xd - Xs / SE
=0.09056/ 0.045138
= 0.20063
Since 0.20063 lies between +/- 2.12 hence the H0 would be accepted implying that dominant and subordinate individuals do not differ in the means of giggle spectral CV