Answer:
A. Observational study
Explanation:
An observational study measures the characteristics of a population by studying individuals in a sample, but does not attempt to manipulate or influence the variables of interest.
A designed experiment applies a treatment to individuals (referred to as experimental units or subjects) and attempts to isolate the effects of the treatment on a response variable.
Hence, we can see that proposed study is observational.
Answer:
ability motivation suitability
Explanation:
Total Population = Current Population + (Population * Birthrate) - (Population *Deathrate) + Immigration rate - emigration rate
Total Population = 20000 + 20000(25/1000) - 20000(7/1000) + 600 - 200
Total Population = 20400 + 500 - 140
Total Population = 20760
<span>The sample is the 1,000 men tested in two groups. The population would be the broad class of balding men. All 1,000 men are considered a part of the sample regardless of which group they were in because each of the 1,000 men is representing an equal portion of the population.</span>
