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(Solution Library) ABC Manufacturing has 6 machines that perform a particular task. Breakdowns occur frequently for these machines. Past records indicate that

Question: ABC Manufacturing has 6 machines that perform a particular task. Breakdowns occur frequently for these machines. Past records indicate that the number of breakdowns that occur each day is described by the following probability distribution:

Number of Breakdowns Probability
0 0.40
1 0.30
2 0.20
3 0.10
More than 3 0.00
  1. What type of data is the number of breakdowns?
  2. What is the expected number of breakdowns in any given day?
  3. What is the variance of this distribution?
  4. What is the probability that there will be at least 2 breakdowns in a day?

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