A renovation of the gift shop at Orlando Amway Center has six activities (in hours). For the following estimates of a, m, and b calculate the expected time and the standard deviation for each activity:
Activity
|
a
|
m
|
b
|
A
|
11
|
15
|
19
|
B
|
27
|
31
|
41
|
C
|
18
|
18
|
18
|
D
|
8
|
13
|
19
|
E
|
17
|
18
|
20
|
F
|
16
|
19
|
22
|