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

question 61

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? Test using the.01 significance level. The mean number of desks produced last year (50 weeks, because the plant was shut down two weeks for vacation) is 203.5. i. The alternate hypothesis is $\mu$ $\neq$ 200.
ii. The calculated value of z is 1.55.
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:

Tubercle

A small rounded projection or nodule, often found on bones or the skin.

Calcaneus

The largest tarsal bone; also called the heel bone.

Tarsal Bone

One of the seven bones constituting the tarsus, located in the ankle and heel of the foot, playing a crucial role in foot movement and stability.

Femur

The bone in the upper leg; commonly called the thigh bone.