An Anthropologist Is Studying the Strength of Fragments of Pottery

question 19

Essay

An anthropologist is studying the strength of fragments of pottery ("sherds") found inthree archeological sites in the Phoenix Basin area of Arizona. Her study involvesapplying force to the sherds until they break, so she plans to use only a small sampleof available artifacts. Her data contains the location of the sherd (site), and theweight and thickness of the sherd. A partial list of the data is shown below. a) Briefly describe a process to select a simple random sample of size n = 20 fromthis list of sherds. You may assume that you have a random number table to workwith, but do NOT carry out the process you describe.
b) Briefly describe how a stratified random sample could be selected with stratacorresponding to archeological sites.

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Definitions:

Marginal External Cost

The cost of producing one additional unit of a good or service that is borne by someone other than the producer or consumer, such as environmental pollution.

Marginal Social Cost

The total cost to society of producing one additional unit of a good, including both private costs and externalities.

Equilibrium Price

The price at which the quantity of a product offered for sale equals the quantity of that product in demand.

Air Cargo

Goods being transported by aircraft, often for commercial purposes or rapid delivery.