Answer:
Population = All Sandhill cranes bred and hatched in Alaska that migrate south
Sample = The 50 crane samples which are tagged yearly.
Step-by-step explanation:
The population refers to all members or subjects which belongs to a defined study. Each and every subject which meets the requirement of a study makes up the population.
The sample however, is a subset of the population, the sample is a smaller group of subject which is selected from the population randomly to for a representative sample of the population. Here, it is the 50 sampled sandhill cranes bed per year.
Hello! I see this is your very first question, so welcome to brainly!!
Answer-
Refractive index(R.I) is 4/3
Apparent depth = d/(R.I) = 20/(4/3) = 20 (3/4) = 15cm
Hope this helps! Have a great day,
-AcEdd