## The dataset finches is, as best I know, real data from Charles
## Darwin's adventures through the Galapagos islands. All
## measurements taken on finches are recorded in millimeters. You can
## find the CSV of the dataset at the following link:
## https://raw.githubusercontent.com/roualdes/data/master/finches.csv
## Read in the dataset using the funciton read.csv.
## Make an appropriate ggplot2 plot of the variable winglength. Name
## your plot p.
## Assume the wing length measurements come from a Normal distribution
## and use the likelihood method together with optim to estimate the
## population mean wing length of finches from the Galapagos islands.
## Add this estimate to your plot p.
## Write a complete English sentence describing this estimate.
## Using the bootstrap method, calculate a 95% confidence interval
## for the population mean wing length of finches from the Galapagos
## islands.
## Add this confidence interval to your plot p.
## Write a complete English sentence describing this confidence
## interval.