The park service records the number of reported rattle snake sightings on Bald Mountain Trail and Camel Back Trail. The data gives rise to the following two bar graphs.

Rattle Snake Sightings
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   Bald Mountain Trail
   Camel Back Trail

Use the stacked bar graph to fill in the contingency table below.

Rattle Snake Sightings
Year
Trail
2016
2017
2018
Total
Bald Mountain
Camel Back
Total