Scenario $2\mathrm{.}2$ Amanager observes a worker assembling gift baskets and records the data displayed in the table Time $($ minutes $)18$ Observations $10221215$ Use the information in Scenario $2\mathrm{.}2.$ What is the average time for this job element $?16\mathrm{.}33$ minutes $21\mathrm{.}37$ minutes $18\mathrm{.}54$ minutes $20\mathrm{.}27$ minutes