#16 Environmental: Land Formation Arches National Park is famous for its beautiful desert landscape and its many natural sandstone arches. A park ranger started an inventory of natural arches within...

I only need help answering D and E, thank you!

Extracted text: #16 Environmental: Land Formation Arches National Park is famous for its beautiful desert landscape and its many natural sandstone arches. A park ranger started an inventory of natural arches within the park that have an opening of at least 3 feet. The following table is based on the information recorded. The height of the arch is rounded to the nearest foot. Height of arch, feet Number of arches in Park 3-9 10-29 30-49 50-74 75 and higher 111 96 30 33 18 For an arch chosen at random in Arches National Park, use the preceding information to estimate the probability that the height of the arch opening is (a) 3 to 9 feet tall (b) 30 feet or taller (c) 3 to 49 feet tall (d) 10 to 74 feet tall (e) 75 feet or taller