Final answer:
The researchers collected eggs from 40 unrelated nesting doves to study the impact of nest size on egg size.
Step-by-step explanation:
The researchers have collected one randomly-chosen egg from each of 40 unrelated nesting doves to study the impact of nest size on egg size. Here are the calculated values:
a) Standard deviation of egg sizes
b) Mean egg size
c) Sample size of the collected eggs
d) Range of nest sizes