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A warehouse contains ten printing machines, four of which are defective. A company selects five of...

A warehouse contains ten printing machines, four of which are defective. A company selects five of the machines at random, thinking all are in working condition. The company repairs the defective ones at a cost of $65 each.

In what interval would you expect the repair costs on these five machines in dollars to lie 75% of the time? (Use Tchebysheff's theorem. Round your answers to the nearest cent.)

Math   Statistics-And-Probability   
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