Answer:
.55
Explanation:
just subtract .45 from 1 and then you have your answer.
9514 1404 393
66%
The categories are mutually exclusive, so we have ...
P(≤30) = P(1–10) +P(10–20) +P(20–30) = 5% +16% +45%
P(≤30) = 66%
The probability is 66% that a randomly chosen student has visited 30 or fewer states.
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