anonymous
  • anonymous
Suppose that in Sleepy Valley only 25% of those over 50 years old own CD players. Find the probabilty that among four randomly chosen people in that age group none owns a CD player.??
Probability
katieb
  • katieb
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sirm3d
  • sirm3d
Prob of not owning a CD player = 1 - 0.25 = 0.75 all four people not owning a CD player = (0.75)^4
anonymous
  • anonymous
I need your help with this question as well
anonymous
  • anonymous
A stereo repair shop uses a two step diagnostic procedure to repair amplifiers. Step I locates the problem in the amplifier with probability 0.7 and Step II (which is executed only if step I fails to locate the problem) locates the problem with probability 0.7 . WHat is the probability that the procedure will fail to locate the problem?

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