hi im a bioinformatics student as i have never had any previous programming experience i need help
this is the question i need to answer: Random walk model we want to model a random walk where you take a step to the left with probability p and one to the right with probability 1-p. Now assume that there is a line of 11 squares. once you are in square 0 or in square 10 the walk ends. The aim of this problem set is to write a simulation for the random walk and analyse its dynamics 1. write a simulation for a random walk which allows you to calculate the probability of ending up in square 0 starting from any other square. 2. analyse the probability of ending up in square 0 starting from any other square. Also calculate the mean time until you have reached square 1 for p= 0.1,0.2,0.3,0.4 and 0.5. What is the probability of reaching square 10 for these parameters hint simulate each scenario 1000 times and plot on histogram this is the code that i have come up with but its not working very well. rw<-function(sw,p,nrep){ Z=0 T=0 count=0 for (i in 1:nrep) { n<-0 s=sw while (s>0 & s<10) { x<-runif(1, min=0, max=1) if (x<p) {s<-s-1} else{s<-s+1} print (s) n<-n+1 } count<-count+n print (count) if (s==0) {Z<-Z+1} else {T<-T+1} } PrZ=Z/nrep print(c("PrZ",PrZ),quote=FALSE) } if you could shed some light on this it woul be really helpful. please let me know how much you would like as payment aswell. thanks rohan _________________________________________________________________ Eat well and eat right. Get tips on nutrition from Naini Setalvad ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.