A Manufacturer of torque converters claim only 1% of them are defective.

A. Calculate the Mean number of defective converters in a shipment of 500 converters.
B. Calculate the standard deviation in the defective torque converters in a shipment of 500 converters.
C. Would it be unusual for 9 converters (out of a shipment of 500 converters) to be defective?

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