Question: (a) Estimate the standard deviation using the range rule of thumb, which is based on the fact that four standard deviations practically cover the span

(a)Estimate the standard deviation using the "range rule of thumb," which is based on the fact that four standard deviations practically cover the span of the data (about 95% for normal distributions), when rank ordered.Do not calculate the actual standard deviation value using its formula or technology for this part.The standard deviation found would have the same unit as in Part (a) above; the unit should accompany the value when reported.

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