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In a survey of 1000 social-media account holders aged 18 years and older conducted by a...

In a survey of 1000 social-media account holders aged 18 years and older conducted by a certain organization, it was found that 63% of them have one or two such accounts. If 10 of the participants in the survey are picked at random, what is the probability that at most 7 of them have one or two social-media accounts? (Round your answer to four decimal places.)

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Probability calculation.

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