Answer: B.) 0.5mi
Step-by-step explanation:
Measured value = 953 mi
The greatest possible error in a measurement is defined as half the precision unit adopted when taking the measurement.
Therefore, for a measured value of 953mi;
The precision unit adopted is 1. As the measurement ignored values after the last unit value.
Therefore ; half the precision unit = 1÷ 2 = 0.5mi
The value 953 mi could be any number between:
952.5 mi to 953.4
952.5 could be rounded up to 953
953.4 could be rounded down to 953
952.5 - - - - 953 - - - - - 953.5
+0.5 - - - - 0.5
