Nerve growth factor (NGF) is a protein that has been shown toplay a role in the development and maintenance of peripheralsympathetic neurons. One approach to study NGF is to deprive theanimal of NGF and study the effect of this deprivation on variouscell types. In this study, the effect on the today protein contentin the dorsal root ganglia of rats is considered. Two groups ofrats are compared: Those born to NGF deficient females (in utero)and those born to normal females but nursed by NGF deficientfemales (in milk). The data is shown below
In Milk (M): 0.19 , 0.21, 0.21, 0.23, 0.20,0.22
In Utero( U): 0.12, 0.19, 0.17, 0.20, 0.09,0.13, 0.21
Researchers are interested in whether the total protein contenttends to be higher among rats deprived of NGF in milk.
- Let Y be total protein content of a randomly selected rat fromthe in utero population and X be that of a randomly selected ratfrom the milk population. What is the appropriate alternativehypothesis?
- Find the value of the Wilcoxon Rank-Sum test statistic
