The data set MnGroundwater has measurements on water quality of 895 randomly selected wells in Minnesota.
(a) Create a histogram or normal quantile plot of the alkalinity and comment on the distribution.
(b) Find a 95% t confidence interval for the mean μ of alkalinity levels in Minnesota wells.
(c) Find the 95% bootstrap percentile and bootstrap t confidence intervals for the mean alkalinity level and compare results. Which confidence interval will you report?