A stratified simple random sample has been taken with the following results. 
a.Determine a point estimate for the mean of the population.
b.Estimate the standard error of the mean.
c.Approximate a 95% confidence interval for the population mean.
d.Compute the population total.
e.Determine a 95% confidence interval for the population total.
Definitions:
Vertical
Relating to or denoting a direction or plane that is perpendicular to the horizon or to a base line, often used in various fields to describe orientation.
Outlier
An observation in data that is significantly distant from the rest of the observations, often indicating a measurement or entry error, or a novel or extreme value.
Positively Associated
A relationship between two variables where they move in the same direction, implying that as one variable increases, the other one also increases.
Above-average Values
Above-average values refer to data points or observations that exceed the average or mean value of the data set.
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