Time Left:1:39:07 Nattha Sueabuengphrao; Attempt 1 Question 7 (Mandatory) (5 points) Saved Listen A sample of 20 employees from the local Honda plant was obtained and the length of time (in months) worked was recorded for each employee, A stem-and-leaf plot of these data follows. In the stem-and-leaf plot. 512 represents 52 months, 5 24899 6 03567789 7 347899 9 8 The mean length of time (in months) worked for these 20 employees is ( a) 66 b) 67 O c) 67.5 . d) 68.25 Oe) none of these Question 8 (Mandatory) (5 points)