# Question

Chlorine is added to city water to kill bacteria. In a certain year, chlorine content in water from the Lake Huron Water Treatment plant ranged from 0.79 ppm (parts per million) to 0.92 ppm.

(a) Use the midrange as a measure of center.

(b) Use the Empirical Rule to estimate the standard deviation.

(a) Use the midrange as a measure of center.

(b) Use the Empirical Rule to estimate the standard deviation.

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