While it is true that heredity has a great effect on an individual's level of intelligence, research suggests that environment has the most influence of the two factors. ... Genetics may set the base levels of achievement, but human perseverance can affect a huge change in observed intelligence.
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Answer:
The population distributions are approximately normal.
Explanation:
It states in the text that the meeting is approximately normal, which is why it can be followed by a normal distribution.
B demand for goods and services
Answer:
a. longitudinal
Explanation:
A longitudinal study examines a given group over a long period of time, so collecting data from the same group of 30 people over their lifetime certainly fits that definition. It's more like an evolution study.
A cross-sectional compares different groups at the same point in time. So, it's more like a survey.
A microgenetic is much focused in time, providing multiple data sets in a short time to examine rapid evolution of a subject.
An experimental study design will make interactions and experiments with the study group, while this is not the case here apparently, and experimental is usually for a much shorter period than a generation.