SOLUTION: Arches National Park is located in southern Utah. The park is famous for its beautiful desert landscape and its many natural sandstone arches. Park Ranger Edward McCarrick started

Question 985777: Arches National Park is located in southern Utah. The park is famous for its beautiful desert landscape and its many natural sandstone arches. Park Ranger Edward McCarrick started an inventory (not yet complete) of natural arches within the park that have an opening of at least 3 feet. The height of the arch opening is rounded to the nearest foot.
Height of arch, ft. :Number of arches in park
3-9 : 111
10-29 : 96
30-49 : 30
50-74 : 33
75 and higher : 18

estimate the probability that the height of the arch opening is:
a.75 feet or taller.
b.10 to 74 feet.
c.3 to 49 feet.
d.30 feet or taller.
e.3 to 9 feet.
f.3 to 49 feet.

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Park Ranger Edward McCarrick started an inventory (not yet complete) of natural arches within the park that have an opening of at least 3 feet. The height of the arch opening is rounded to the nearest foot.
Height of arch, ft. :Number of arches in park
3-9 : 111
10-29 : 96
30-49 : 30
50-74 : 33
75 and higher : 18
Total arches::: 288
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estimate the probability that the height of the arch opening is:
a.75 feet or taller:: 18/288
-----------------------------
b.10 to 74 feet:: (96+30+33)/288 = 159/288
------------------------
c.3 to 49 feet:: (11+96+30)/288 = 137/288
----------------------------
etc.
d.30 feet or taller.
e.3 to 9 feet.
f.3 to 49 feet.
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Cheers,
Stan H.
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