Suppose a computer chip manufacturer rejects 15% of the chips produced because they fail presale testing.If you test 3 chips,what is the probability that not all of the chips fail?
A)0.45
B)0.9966
C)0.6141
D)3.375 × $10 ^ { - 3 }$
E)0.15

Question

Quizplus · Accepted Answer

The probability that all chips fail is $0.15^3 = 0.003375$ or $3.375 \times 10^{-3}$. Therefore, the probability that not all chips fail is $1 - 0.003375 = 0.996625$, which rounds to $0.9966$, matching option B.

Suppose a Computer Chip Manufacturer Rejects 15% of the Chips 10−310 ^ { - 3 }10−3

Suppose a Computer Chip Manufacturer Rejects 15% of the Chips $10 ^ { - 3 }$