anonymous
  • anonymous
The probability that the notes level of a wide- band amplifier will exceed 2 dB is 0.05 . Find the probabilities that among 12 such amplifiers the noise level of One will exceed 2 dB
Mathematics
schrodinger
  • schrodinger
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anonymous
  • anonymous
if i help you can i get a medal
kc_kennylau
  • kc_kennylau
The probability of at least one amplifier exceeding 2dB is the same as 1 - the probability of no amplifier exceeding 2 dB
kc_kennylau
  • kc_kennylau
\[P(X\ge1)\\=1-P(X=0)\\=1-(1-0.05)^{12}\\=0.459639912...\]

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anonymous
  • anonymous
why are you soo good at math i wish i had ur math skills

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