Please help me to solve this question in R. I need all steps and R-code.

A simple random sample of 100 water meters within a community is monitored to estimate the average daily water consumption per household over a specified dry spell. The sample mean and sample variance are found to be y = 12.5 and s ² = 1252. If we assume that there are N = 10000 households within the community, estimate , the true mean consumption.