Please provide all the steps: for each solution

The frequency distribution below displays the distribution of scores assigned to a sample of employees as a part of the annual performance review process in a public organization. The performance evaluation scale ranged between 0 and 100, however in this particular organization employees' actual performance scores assigned to employees ranged between 50 and 99.

a.Complete the table by filling in the columns for percentages, and cumulative percentages (in Table 2).

b.Obviously, you do not have access to the case-by-case (or "raw") data with individual scores for each employee in the sample. Based solely on the frequency distribution shown in the table above (including the cumulative percent column), find the interval, where the median performance score lays.

Class Intervals. Frequency.Percentage. Cumulative Percentage.

50 - 59 3

60 - 69 4

70 - 79 9

80 - 89 6

90 - 99 3

TOTALS