The Jamestown Steel Company Manufactures and Assembles Desks and Other $\mu$

question 108

Multiple Choice

The Jamestown Steel Company manufactures and assembles desks and other office equipment at several plants. The weekly production of the Model A325 desk follows a normal probability distribution, with a mean of 200 and a standard deviation of 16. Recently, due to market expansion, new production methods have been introduced and new employees hired. The vice president of manufacturing would like to investigate whether there has been a change in the weekly production of the Model A325 desk. Is the mean number of desks produced different from 200? The mean number of desks produced last year (50 weeks, because the plant was shut down two weeks for vacation) is 203.5. Test using the.01 significance level. i. The alternate hypothesis is $\mu$ $\neq$ 200.
ii. It is appropriate to use the z-test.
iii. The decision rule is: if the computed value of the test statistic is not between -2.58 and 2.58, reject the null hypothesis.

• A) (i), (ii), and (iii) are all correct statements.
• B) (i) is a correct statement but not (ii) or (iii).
• C) (i) and (iii) are correct statements but not (ii).
• D) (ii) and (iii) are correct statements but not (i).
• E) (i), (ii), and (iii) are all false statements.

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Definitions:

Environmental Protection

Laws, regulations, and practices aimed at safeguarding the environment from harm caused by human actions, preserving natural resources and ecosystems.

Legislative Attention

This refers to the focus or consideration that legislative bodies give to particular issues, policies, or laws, potentially leading to new enactments or amendments to existing laws.

Real Property

Land, as well as anything permanently attached to it, such as buildings and other structures.

Personal Property

Items of property that are movable and not fixed to land, such as vehicles, furniture, and electronic equipment.