statistics homework- sampling

statistics homework- sampling
use R program to do the questions if need.
here is the link for 4 sources:
http://www.sendspace.com/filegroup/uoEyL4LAZQzpvP85HpNVCUxyUb2mM6dH
PLACE THIS ORDER OR A SIMILAR ORDER WITH US TODAY AND GET AN AMAZING DISCOUNT 🙂

Â