Problem No.1 Each of the following processes involves sampling from a population

Question

Problem No.1 Each of the following processes involves sampling from a population. Define the population, and state whether it is tangible or conceptual. Justify your answers. 1) A chemical process is run 36 times and the yield is measured each time 2) The resistance of a certain resistor is measured seven times with the same ohmmeter. 3) Nine welds are made with the same process, and the strength of each is measured. 4) In a clinical trial to test a new drug that is designed to lower cholesterol, 125 people with high cholesterol levels were recruited to try the mew drug 5) A quality engineer needs to estimate the percentage of wallpaper rolls manufactured on a certain day that are defective. At 4:30 in the afternoon he samples the last 50 rolls to be manufactured. Note: explicit justification of the answers is required. Problem No.1 solution

Explanation / Answer

1) Conceptual Population: Chemical process yield

2) Conceptual population: Resistance

3) Conceptual population: Weld strength

4) Tangible population: People on whom drug is tested

5) Tangible population: Wallpaper rolls

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