J's answer to Kobe Stewart's United States question.

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J
J's answer
1022 answers (A Helpful Person)
1st
P(R is greater than or equal to 1)
= 1 - P(R = 0)
= 1 - (5 choose 0) (0.3)^0 (1 - 0.3)^(5 - 0)
= 1 - (1) (1) (0.7)^5
= 1 - 0.16807
= 0.83193