Examlex
Simple random sampling has been used to obtain a sample of 81 elements from a population of size 500. The sample mean is 120, and the sample standard deviation is determined to be 36.
a.Estimate the standard error of the mean.
b.Develop an approximate 95% confidence interval for the population mean.
c.Estimate the population total.
d.Develop an approximate 95% confidence interval for the population total.
Sediments
Particles of rock, mineral, or organic material deposited by water, wind, or ice, often forming layers on Earth's surface.
Drainage Divide
The boundary between adjacent drainage basins.
Drainage Basin
The area of land drained by a river and its tributaries, also known as a watershed or catchment area.
High Ground
An area of elevated terrain that can provide strategic advantages, such as better visibility or defense, and is often sought after in military and construction contexts.
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