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A telephone survey uses a random digit dialing machine to call subjects. The random digit dialing...

  1. A telephone survey uses a random digit dialing machine to call subjects. The random digit dialing machine is expected to reach a live person 15% of the time.
    1. True or False: Each call is an independent random event.

In two attempts, what is the probability of achieving……

  1. exactly two successful calls? (success = reach a live person)
  2. one success and one failure (in any order)?
Math   Statistics-And-Probability   
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