Use the Following to Answer the Question(s) Below

Multiple Choice

Use the following to answer the question(s) below.
IT staff for a large corporation has developed the following probability distribution for the number of calls requiring troubleshooting problems per day.

-The standard deviation of the sampling distribution of mean times is

A) 0.4 minutes.
B) 2 minutes.
C) 0.08 minutes.
D) 1.6 minutes.
E) 0.12 minutes.