Question 329423
A){{{P=(0.8)^4=0.4096}}}
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B){{{P=(0.2)^4=0.0016}}}
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C)"At least one hits the target" is the same as saying "not all missed".
P(all missed)+P(not all missed)={{{1}}}
P(not all missed)={{{1}}}-P(all missed)
P(not all missed)={{{1-0.0016=0.9984}}}
P(at least one)={{{0.9984}}}