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(A) Construct a 95% confidence interval for the average width of an elevator rail. Do we need to assume that the width of elevator rails follows a normal distribution?
(B) How large a sample of elevator rails would we have to measure to ensure that we could estimate, with 95% confidence, the average diameter of an elevator rail within 0.01 inch?
Intimate
Relating to or indicative of a close personal relationship or private nature, often associated with deep emotional connections.
Social-Consultive
Relates to a process or approach that involves consultation and engagement with social groups or communities, particularly in decision-making or policy formulation.
Receptive Bilingualism
A form of bilingualism where an individual can understand two languages but can only speak or write in one.
Passive Bilingualism
The ability to understand a second language but not speak it fluently.
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