Find the mean and range. 26 19 23 39 31 34 23 25 a. mean=28.7; range=20 b. mean=27.5; range=21 c. mean=26; range=21 d. mean=27.5; range=20

The table below shows the approximate masses of a dust particle and a grain of pollen. dust particle 0.000000778 g grain of pollen 0.00000000155 g the mass of a dust particle can be estimated and written in the form a × 10^b, where a = 8 and b = the mass of a grain of pollen can be estimated and written in the form a × 10^b, where a = 2 and b = based on the estimates, the mass of a dust particle is approximately blank times larger than the mass of a grain of pollen.