A national park is famous for its beautiful desert landscape and its many natural rock formations The following table is based on information gathered by a park ranger of all rock formations of at least 3 feet The height of the rock formation is rounded to the nearest foot Height of rock formation feet 3 9 10 29 Number of rock formations in park 114 86 X b 30 feet or taller 7 56 c 3 to 49 feet 87 28 For a rock formation chosen at random from this park use the preceding information to estimate the probability that the height of the rock formation is as follows Round your answers to two decimal places a 3 to 9 feet 39 17 X d 10 to 74 feet 12 72 X 30 49 50 74 75 and higher 39 e 75 feet or taller 22 10