You Wish to Construct a 90% Confidence Interval to Compare

question 41

Multiple Choice

You wish to construct a 90% confidence interval to compare the mean measurement for two groups.A small pilot study yields sample standard deviations of 20 and 30 for Group 1 and Group 2,respectively.If we wish to obtain a margin of error of at most 5,what sample size should we take from each group? Assume equal sample sizes.

• A)141
• B)139
• C)143
• D)140
• E)142

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Definitions:

Work in Process Inventory

Goods that are in the process of being manufactured but are not yet complete.

Manufacturing Overhead

All indirect costs associated with the manufacturing process, including but not limited to utilities, supervision, and factory equipment maintenance.

Direct Labor-Hours

Aggregate work hours of employees directly participating in production activities.

Overapplied Overhead

A scenario in which the overhead costs assigned to manufacturing exceed the overhead expenses actually incurred.