<PRE><B>Question 1036181</B>
Height of arch, feet....	3-9	10-29	30-49	50-74	75 and higher
Number of arches in park	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 3 to 49 feet. 
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Ans: (111+96+30)/(111+96+30+33+18) = 237/288 = 0.8229

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Cheers,
Stan H.
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