In Order to Determine How Many Hours Per Week Freshmen

question 79

Short Answer

In order to determine how many hours per week freshmen college students watch television, a random sample of 256 students was selected. It was determined that the students in the sample spent an average of 14 hours with a standard deviation of 3.2 hours watching TV per week.
a.Provide a 95% confidence interval estimate for the average number of hours that all college freshmen spend watching TV per week.
b.Assume that a sample of 62 students was selected (with the same mean and the standard deviation). Provide a 95% confidence interval estimate for the average number of hours that all college freshmen spend watching TV per week.

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Definitions:

CNC

Acronym for Computer Numerical Control, a process used in manufacturing that involves the use of computers to control machine tools.

Computer-Integrated Manufacturing

A system of manufacturing in which the entire production process is controlled by computer, from the initial design and manufacturing of the product to its final delivery.

Flexible Manufacturing System

An approach to manufacturing that allows for the easy adaptation of processes and machines to make different products or parts.

Inventory Control

The processes and strategies used to manage the ordering, storing, and use of components or products to minimize costs and meet customer demand.