Simple Random Sampling Has Been Used to Obtain a Sample

question 41

Essay

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.

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Definitions:

Technical Support

Assistance provided to users who are having issues with electronic devices, software, or services.

Confidence Interval

A range of values used in statistics that is likely to contain the population parameter of interest.

Girondins

A political faction in France during the French Revolution, known for their moderate positions and representing the interests of the wealthy middle class.

Treaty of Greenville

A 1795 treaty between the United States and various Native American tribes where the tribes ceded large parts of Ohio for white settlement in exchange for a stipend.