Problem 2 Use the full data with 615 observations (raw.data) to do the following. 1). Randomly select a sample of income of 100 people without replacement from the full data and find the mean and standard deviation of income of this sample. Repeat this 10000 times, calculate and save the means and standard deviations of income of each of 10000 sample . 2). Use a graphical way to show the distribution of sample means. Explain the shape of the distribution curve. 3). Find the mean and standard deviation of income of all sample means you saved from 1). 4). Compare the results from 3) with mean and standard deviation of income of full data (615 observation) and explain why