(Answered) Fill in the blanks the number of hours it takes for a

Statistics

Fill in the blanks: The number of hours it takes for a certain metal part to wear out is assumed to be from a population with a normal probability distribution with a mean of 1,400 hours and a standard deviation of 180 hours. If this is true, then approximately 68% of the parts are predicted to wear out between _______ and _______ hours of operation.

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