Q. Terminology. Please fill up the blanks:

Happy Babies manufactures 2,000 luxury baby-cribs. A researcher wants a sample of 100 of them. Each of the cribs is assigned numbers and then random numbers are used so that every crib has an equal chance of being selected.

a) This is known as a: ___________________.

b) Measurements obtained from this are known as: ___________________.

c) If you want to determine the population parameters, you have to take a _________ of the entire population. d) Any characteristic (measurement) obtained from c is known as a ________________.