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Sagot :
a) P(student and independent) = 58/396 = 0.146
b) P(Republican and professor) = 83/ 396 = 0.210
c) P(democrat or professor) = P(professor) + P(democrat)
= 213/396 + 135/396
= 0.538 + 0.340
= 0.878
d) P(democrat or independent) = P(democrat) + P(independent)
= 135/396 + 108/396
= 0.341 + 0.273
= 0.614
e) P(republican and independent) = P(republican) * P(independent)
= 153/396 * 108/396
= 0.386 * 0.273
= 0.105
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