This frequency distribution represents the commission earned (in dollars) by 80 salespeople employed at several branches of a large chain store. Class limits Frequency (f) Midpoint (m) fm fm? 150 –...

Extracted text: This frequency distribution represents the commission earned (in dollars) by 80 salespeople employed at several branches of a large chain store. Class limits Frequency (f) Midpoint (m) fm fm? 150 – 158 159 – 167 16 (i) (ii) (iii) 168 – 176 20 177 – 185 21 186 – 194 20 Total 80 a. Is the given data a population or a sample? b. Give the values for (i), (ii), and (iii) in the table above. You do not have to complete the whole table. c. It is given that E fm E fm? = 2497913. Using this = 14111 and information, calculate the mean and standard deviation of the commission earned by a salesperson.