Petroleum pollution in oceans stimulates the growth of certain bacteria. An assessment of this growth has been made by counting the bacteria in each of 5 randomly chosen specimens of ocean water (of a fixed size). The 5 counts obtained were as follows.

53, 45, 54, 61, 57

Petroleum pollution in oceans stimulates the growth of certain bacteria. An assessment of this growth has been made by counting the bacteria in each of 5 randomly chosen specimens of ocean water (of a xed size). The 5 counts obtained were as follows. 53, 45, 54, 61, 57 Find the standard deviation of this sample of numbers. Round your answer to two decimal places. (If necessary, consult a list of formulas.) U x3