Consider the following summary of a data set on the income of residents of Sydney inthe 2015-2016 ?nancial year, measured in thousands of dollars: 400 observations, mean 60, standard deviation 54, skewness 4, kurtosis 21. Construct a 95% confidence interval for the true mean of the annual earnings of this population, also in thousands of dollars, rounded to whole numbers. What is the lower bound of the con?dence interval.