#1
0.28 b) 6.0x10-2 c) 2.2 d) 11
#2
(M2-M1)/2 = 50.3g
50.3 ± 0.2 g
δ (M2-M1)/2 = ±0.3/2 = 0.15 = 0.2
#3
X = 14.91% and d= 0.01 ; d/x = 6.7x10-4 < 2x10-3 Measurements are precise
d/xtrue = 6.3x10-4 < 2x10-3 Measurements are accurate
