Answer:
~3.547%
Step-by-step explanation:
Use the Binomial Probability Distribution:
P(X=R) = nCr*p^r*q^(n-r)
This equals:
30C20*(.8)^20*(.2)^10
Which equals 0.03547089295...
the answer is B
just did the test
Yes
8²+6²=100
√100
=10
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