Scrapper Elevator Company has 20 sales representatives who sell its product throughout the South Africa and Lesotho. The number of units sold last month by each representative is listed in Table A below. Assume these sales figures to be the population values.

Table A

2 3 2 3 3 4 2 4 3 2 2 7 3 4 5 3 3 3 3 5

Three random samples of 5 units sold were selected and the results are given in Table B below:

Sample 1	Sample 2	Sample 3
3	3	4
4	2	5
7	2	7
3	7	5
5	5	3

a. Draw a graph showing the population distribution (use a limit or bin of 1)

b. Compute the mean of the population.

c. Determine the sampling error associated to sample 1 and 3