John Davis, a Manager of a Supermarket, Wants to Estimate

question 111

Multiple Choice

John Davis, a manager of a supermarket, wants to estimate the proportion of customers who use food stamps at his store. He has no initial estimate of what the sample
Proportion will be. How large a sample is required to estimate the true proportion to
Within 3 percentage points with 98% confidence?

• A) 756
• B) 1,067
• C) 1,849
• D) 1,509

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Definitions:

Neural Plate

The flat layer of embryonic ectodermal cells that develops into the nervous system, including the brain and spinal cord.

Neural Fold

Embryonic structure that folds to form the neural tube, which later develops into the central nervous system in vertebrates.

Thalamus

The part of the vertebrate brain that serves as a main relay center, transmitting information between the spinal cord and the cerebrum.

Medulla

(1) The inner part of an organ, such as the medulla of the kidney. Compare with cortex. (2) The most posterior part of the vertebrate brain, lying next to the spinal cord.