Question

Dalia owns a gravel pit. She took a random sample of rocks and counted 58 sedimentary rocks, 213 metamorphic rocks, and 522 igneous rocks. Use the observed frequencies to create a probability model for Dalia randomly selecting one rock from her gravel pit.

Answer 1

Answer:

Sedimentary:0.07

Metamorphic:0.27

Igneous: 0.66  

Step-by-step explanation: First you add the total of rocks in all.

58+213+522=793

Then you would divide that amount of each different rocks by 793

so 58/793=0.07

213/793=0.27

522/793=0.66

Step-by-step explanation:

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Answer 2

Answer:

Sedimentary => 0.07

Metamorphic => 0.27

Igneous => 0.66

Step-by-step explanation: