Administrative Assistants in a Local University Have Been Asked to Prove

question 97

Short Answer

Administrative assistants in a local university have been asked to prove their proficiency in the use of spreadsheet software by taking a proficiency test. Historically, the mean test score has been 74 with a standard deviation of 4. A random sample of size 40 is taken from the 100 administrative assistants and asked to complete the proficiency test.
A) Calculate the expected value and the standard deviation (standard error) of the sample mean.
B) What is the probability that the sample mean score is more than 75, the predetermined passing score?

• A) Calculate the expected value and the standard deviation (standard error) of the sample mean.
• B) What is the probability that the sample mean score is more than 75, the predetermined passing score?

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Definitions:

Railroads

A transportation system consisting of a track of rails on which trains travel, used for moving passengers and goods over long distances efficiently.

Dawes Act

A law passed in 1887 that aimed to assimilate Native Americans into US society by allotting individual land parcels to heads of families, stripping away communal tribal land.

Indian Poverty

The state of economic deprivation and lack of access to resources faced by many in India, due to factors such as population density, corruption, and historical inequities.

Tribal Rights

Legal or moral rights recognized for indigenous tribes, including land rights, self-determination, and preservation of culture and language.