Employee masses and a threshold probability

For the probability calculation, each employee in the stated group is equally likely to be selected.

Thirty employee masses, in kg, are 44, 47, 52, 55, 58, 60, 62, 62, 62, 62, 64, 66, 68, 70, 72, 74, 76, 78, 80, 82, 49, 53, 56, 59, 61, 63, 65, 69, 73, 77.

1. Construct a stem-and-leaf diagram.[3]
2. State the mode.[1]
3. Find the probability that a selected employee has mass at least 60 kg.[2]