Suppose you want to survey the opinions of the residents of an apartment complex. The complex contains 100 buildings, each with 8 units per building, for a total of 800 units. You decide to sample 160 of the units. Suppose you start at a random starting point, and select every 5th unit to be in your sample, until you sample 160 units. What sampling method did you use?
a. A systematic sample.
b. A stratified sample.
c. A cluster sample.
d. A simple random sample
Question 2
Suppose you want to survey the opinions of the residents of an apartment complex. The complex contains 100 buildings, each with 8 units per building, for a total of 800 units. You decide to sample 160 of the units. Suppose 50 of the buildings (400 total units) are for singles, and 50 buildings (400 units) are for non-singles. You randomly select 80 single units and then you randomly select 80 non-single units. What sampling method did you use?
a. A systematic sample.
b. A stratified sample.
c. A cluster sample.
d. A simple random sample
The absorption of light energy by pigment molecules in the light-harvesting complex, and the path th
Heme consists of a complex organic ring structure, protoporphyrin
ECG Complex
Structure and swinging arm mechanism in the mammalian fatty acid synthase complex
Structure of the g complex bound to DNA
Photochemical smog is produced by a complex series of reactions