The number of blueberries in a blueberry muffin baked by Earth Harvest Bakeries can range from 18

Question:

The number of blueberries in a blueberry muffin baked by Earth Harvest Bakeries can range from 18 to 30 blueberries.
(a) Use the Empirical Rule to estimate the standard deviation of the number of blueberries in a muffin.
(b) What assumption did you make about the of the number of blueberries?
Distribution
The word "distribution" has several meanings in the financial world, most of them pertaining to the payment of assets from a fund, account, or individual security to an investor or beneficiary. Retirement account distributions are among the most...