Ed intends to roll a six-sided number cube 100 times. What probability model can he use to predict whether or not each roll will give a result that is a composite number?

A. Each roll has a 0.117 probability of being composite
B. Each roll has a 0.333 probability of being composite
C. Each roll has a 0.5 probability of being composite
D. Each roll has a 0.667 probability of being composite

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MLPshine MLPshine · Answer 1 · 2017-04-22T17:40:46+02:00

The answer is Each roll has a 0.333 probability of being composite.

(I just took the test, B was the answer)

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AFOKE88 AFOKE88 · Answer 2 · 2022-06-02T11:08:01+02:00

The probability model of getting a composite number in each roll is;

B. Each roll has a 0.333 probability of being composite

A composite number is a number that can have more than 2 factors.

In a six sided number cube from 1 to 6, 4 and 6 have more than 2 factors and as such there are 2 numbers that are composite numbers.

Thus, probability model of getting a composite number in each roll is;

P(Composite number) = 2/6 = 0.333

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