You Are Trying to Estimate the Average Amount a Family

question 22

Essay

You are trying to estimate the average amount a family spends on food during a year.In the past the standard deviation of the amount a family has spent on food during a year has been approximately $800.If you want to be 95% sure that you estimated average family food expenditures within $50,how many families do you need to survey?

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Definitions:

Critical Item

An essential or highly important element, object, or factor in a particular context or situation.

Endoscope

A medical instrument consisting of a long, thin, flexible tube with a light and a video camera, used to view the interior of a hollow organ or cavity in the body.

Personal Protective Equipment

Equipment worn to minimize exposure to hazards that cause serious workplace injuries and illnesses, which may include gloves, helmets, goggles, etc.

Law

A rule of conduct established and enforced by an authority or governing body, such as the federal government.