In Example 2, we used an uncalibrated pipette to pipette a
certain volume three times (three times 10.00 ± 0.023 mL). Suppose that we
now calibrate this pipette. After calibrating, we find that its volume is
9.987 mL, with an error of 0.004 mL. Again, we use this pipette three times. What
is the total error in the final volume of 29.934 mL?