The data below represents the ages (in years) of 20 trees in an area of natural vegetation.
Total:
15 17 18 19 19 22 24 25 26 27
28 28 29 32 34 35 37 38 42 43
Determine the population standard deviation for this data (to 2 decimal places).
Determine if this data represents a normal distribution.
State 2 reasons to support your answer. Show your work using statistics.