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Using a ti84 calculator for calculations; Mechanical pencil lead is manufactured with a mean width of...

Using a ti84 calculator for calculations; Mechanical pencil lead is manufactured with a mean width of 9mm. Because of variability in the manufacturing process, the distribution of the width for pencil lead is approximately normally with a standard deviation of 0.04mm. If any pencil lead thinner than 8.928mm is discarded, what proportion of pencil lead is NOT discarded? Round your answer to 4 decimal places.

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