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pogonyaev
3 years ago
9

The probability that a person in the united states has type b​+ blood is 1212​%. threethree unrelated people in the united state

s are selected at random. complete parts​ (a) through​ (d).
Mathematics
1 answer:
lesantik [10]3 years ago
8 0

<span>(a)    </span>P (all B+) = (0.12)(0.12)(0.12)=0.001728=0.1728%

<span>(b)   </span>P (no B+) = (0.88)(0.88)(0.88) = 0.681472=68.15%

<span>(c)    </span>P (not one B+) + P (no B+) = 1

P (not one B+) = 1 – P (no B+)

<span>                             = 1 – 0.681472 </span>

P (at least 1 B+) = 0.318528=31.85%

<span>(d)   </span>B. The event in part (a) is unusual because its probability is less than or equal to 0.05.

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4 0
3 years ago
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