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.

Explanation / Answer

Dear student,

According to Chegg guidelines,only the first four subparts are answered.

1,Here,the yield of experiment measured each time is the population.And it is conceptual since not all chemical processes can be repeated 36 times.

2, The resistance measures of the resistor forms the population here.And it is tangible to measure the reisitance 7 times.

3,Here,the strengths of the nine welds made with the same process forms the population and it is tangible.

4,Here,the cholestrol level and the effect of the new drug on 125 people with high cholestrol forms the population.Here,it is conceptual since it is not advisable to give a new drug to 125 people.

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