ti-89 statistics problem, Need some help

[shemer77]

So this is my assignment and I dont know how to do it on the ti-89. Please help me out, the instructions he gives are for like a ti-83 or something.
Mean=100
stddev=15
In this activity we will simulate drawing repeated samples of diffrent sizes, computing the sample mean , and studying the distribution of the sample mean.
To simulate drawing a sample of size n from a normally distributed population with a mean and a std dev, the command is..

randNormal(mew,std,n) (I found randnormal but it does not have n)

to calculate the mean from a sample of size n drawn from a normally distributed population with mean and std, the command is...

mean(randNormal(mew,std,n)) (This does not work at all on the ti-89)

We are interested in teh center, shape and spread of the dist of the mean so we will want to draw mnay samples and study the distribution of these sample means. So we will draw 100 sample means and construct histograms of the distribution of xbar. TO draw 100 sample means and construct histograms of the distribution of xbar. To draw 100 sample of means of size n from a normally distributed population with mean mew and standard deviation and store them in L1, the command is.....

seq(mean(randNormal(mew,std,n)),X,1,10… ( How the hell do i do this :(? )

To find the mean and stand deviation of the sample means... do 1var stats L1 and record xbar and std deviation.

Then the rest of the assignemtn is graph with different sample sizes, Please help me out!