Question

According to the table, what is the probability that a student chosen at

Answer 1

Answer:  0.85  (Choice A)

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Explanation:

x = number of siblings

We add the probability values that correspond to x = 0 and x = 1, which is when the person has 0 siblings and 1 sibling respectively.

Those probabilities are: 0.20 and 0.65

So we get 0.20+0.65 = 0.85

There's an 85% chance of randomly picking someone who has fewer than two siblings.