Complete the blanks in the table and answer the following questions. In the table, calculate the indicated Class Midpoints and Less-than Cumulative Frequencies. Give answers without the thousands, e.g. 55 instead of 55 000. All data to be used here is in this question, not previous ones. Salary organized into income brackets for all employees at Some Company (x $1000) Lower ($ x1000) Class Limits Upper ($x1000) Midpoint (x) ($x1000) Number of Employees (f) Less-than Cumulative Frequency 0 x < 10 Answer 4 10 x < 20 13 20 x < 30 Answer 20 Answer 30 x < 40 18 Answer 40 x < 50 Answer 15 50 x < 60 10 Answer 60 x < 70 Answer 8 Answer 70 x < 80 4 80 x < 90 5 Answer 90 x < 100 3 Answer 1) In what format is the above data presented? Answer 2) Does this data represent a sample or a population? Answer 3) What is the class width? Answer 4) How many employees work at this company? Answer 5) Using the midpoints to represent the classes, what is the mode? Answer 6) What is the median class? Answer x < Answer (Hint: there are a few relevant formulas towards the end of Chapter 3) 7) Calculate the estimated value of the median salary Answer 8) Compute the arithmetic mean, using the midpoints to represent the classes Answer 9) What is the standard deviation of the salaries? Answer 10) Is this data positively or negatively skewed or symmetrical? Positively Symmetrical Negatively