Suppose a firm monitors the number of complaints it receives over a 5 day period. The 3σ lower and upper limits for this process based on the following data are Day 1 2 3 4 5 Number of Complaints 2 3 1 3 2
a) [0, 7.05]
b) [-2.25, 6.65]
c) [0, 6.65]
d) [-2.25, 7.05]
e) None of the above