Each of 157 gemstones can be classified as one of three classifiions, as shown in the frequency table. Classifiion Frequency

Question

Each of 157 gemstones can be classified as one of three classifiions, as shown in the frequency table. Classifiion Frequency color X 119 color Y 3 color Z 35 If one of the gemstones is selected at random, what is the probability of selecting a gemstone of color Y?

Accepted Answer

Choice A is correct. If one of the gemstones is selected at random, the probability of selecting a gemstone of color Y is equal to the number of gemstones of color Y divided by the total number of gemstones. According to the table, there are 3 gemstones of color Y, and it's given that the total number of gemstones is 157 . Therefore, if one of the gemstones is selected at random, the probability of selecting a gemstone of color Y is 3 157 . Choice B is incorrect. This is the probability of selecting a gemstone of color Z. Choice C is incorrect. This is the probability of selecting a gemstone of color X. Choice D is incorrect. This is the probability of selecting a gemstone that's not of color Y.

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