Question

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

random will have fewer than two siblings?
Number of siblings
0
1
2
3
4
5
Probability
0.20
0.65
0.08
0.04
0.02
0.01
A. 0.85
B. 0.93
O C. 0.07
O D. 0.65
SUBMIT

Answer 1

Answer: 0.85 (Choice A)

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Step-by-step 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.