Eitan randomly selected volcanoes to travel to and study. After traveling, he had seen 131313 cinder cone volcanoes, 181818 shield volcanoes, and 666 stratovolcanoes. Use the observed frequencies to create a probability model for Eitan randomly selecting one volcano in the world on which to conduct an extensive study. Input your answers as fractions or as decimals rounded to the nearest hundredth. Type of volcano Estimated probability Cinder cone 1/13 Shield Stratovolcano