In a Random Sample of 28 Families, the Average Weekly

question 71

Multiple Choice

In a random sample of 28 families, the average weekly food expense was $95.60 with a standard deviation of $22.50. Determine whether a normal distribution or a t-distribution should be used or whether neither of these
Can be used to construct a confidence interval. Assume the distribution of weekly food expenses is normally
Shaped.

• A)Use the t-distribution.
• B)Use normal distribution.
• C)Cannot use normal distribution or t-distribution.

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Definitions:

Equality

A condition of parity, particularly in matters of status, rights, and chances.

Economic Pie

A metaphorical term indicating the total amount of wealth or resources available for distribution within an economy.

Efficiency

Refers to the ability to achieve a desired result without wasting materials, time, or energy.

Equality

The circumstance in which all individuals possess identical opportunities, rights, and standing.