In this problem, we are interested in the length of a word in the gettysburg address, which is a quantitative variable. note that the value of the variable varies from word to word. the population of all word lengths has a distribution, a mean and a standard deviation. the parameter of interest here is the mean length of all words. it would be very tedious and time consuming to count every word’s length and determine the mean length. in statistics, we select a sample and hope that the distribution of the sample is similar to