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An engineer orders and receives a batch containing 10,000 shafts to be used to produce power screws. He randomly picks 5 of the shafts

  

An engineer orders and receives a batch containing 10,000 shafts to be used to produce power screws. He randomly picks 5 of the shafts and measures each diameter. He obtains and average of 1.490 inch and a standard deviation of 0.005 in. He can only use shafts of sizes less than 1.5 inches. How many shafts will be rejected?

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