You Would Like to Estimate the Average Amount a Family

question 46

Essay

You would like 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:

Health Care

The maintenance or improvement of health via the prevention, diagnosis, treatment, recovery, or cure of disease, illness, injury, and other physical and mental impairments in people.

Food Allotments

Portions of land designated for the cultivation of fruit, vegetables, and sometimes livestock, often for personal consumption.

Penalties

Punishments imposed for breaking a law, rule, or contract.

Family Planning

The practice of controlling the number and timing of childbirths through the use of contraceptives or other reproductive technologies.