1.The number of items rejected daily by a manufacturer because of defects for the last 30 days are:

20, 21, 8, 17, 22, 19, 8, 19, 14, 17, 11, 6, 21, 25, 4, 19, 9, 12, 16, 16, 10, 24, 24, 6, 21, 20, 25, 5, 17, 8

Complete this frequency table as outlined below for these data and explain what the data suggest regarding the number of defects.

Items rejected Intervals Frequency Mid point Mid*freq Expected Value (Mean)

4 < 9

9 < 14

14 < 19

19 < 24

24 < 29

Explanation: