The measurement is 9.4030 mi. Find the precision and the greatest possible error of the measurement.
A) The precision of the measurement is 0.000001 mi. The greatest possible error of the measurement is 0.000005 mi.
B) The precision of the measurement is 0.0001 mi. The greatest possible error of the measurement is 0.00005 mi.
C) The precision of the measurement is 0.00001 mi. The greatest possible error of the measurement is 0.00005 mi.
D) The precision of the measurement is 0.00001 mi. The greatest possible error of the measurement is 0.000005 mi.
E) The precision of the measurement is 0.000001 mi. The greatest possible error of the measurement is 0.0000005 mi.

Question

Quizplus · Accepted Answer

The precision of the measurement is determined by the smallest digit, which is the 1/100,000 place (0.00001 mi). The greatest possible error is half of the last digit, which is 1/2 of 1/100,000 or 1/200,000 (0.000005 mi). Therefore, the best choice is D.

The Measurement Is 9