nothing ksbsshshhzvsjajbsjshjsgdvdjhsbsj
Answer:
There was an improvement in accuracy. There was no change in precision.
Explanation:
<em>The average mass after recalibration is closer to the mass of the standard, </em>so the recalibration improved the accuracy<em> </em>(the measurement is closer to an accepted 'true' value).
The standard deviation did not change, so the precision (or how disperse the measurements are) was not affected.
125 Each half life it divides by 2 the amount
1000/2=500
500/2=250
250/2=125