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An environmental advocacy group is interested in the perceptions of farmers about global climate change. Specifically, they wish to determine the percentage of organic farmers who are concerned that climate change will affect their crop yields. They us an alphabetized list of members of the Northeast Organic Farming Association (www.nofa.org), a nonprofit organization of over 5000 members with chapters in Connecticut, Massachusetts, New Hampshire, New Jersey, New York, Rohode Island, and Vermont. They use Excel to generate a randomly shuffled list of the members. They then select members to contact from this list until they have succeeded in contacting 150 memers.

a. What is the population?
b. What is the sampling frame?
c. What is the population parameter of interest?
d. What sampling method is used?

Respuesta :

Answer:

A. 5000

B. 5000

C. Percentage of organic farmers that are concerned about effect of climate change on their crop.

D. Simple random sampling

Step-by-step explanation:

A. all the population of organic farmers in the relevant chapters of organization

B. This is the list of individuals the sample is going to be picked from.

C. This is what the sample data is focuses on to represent the population.

D. This is the situation where every member has an equal at being selected, the sample frame should include all members of the population.

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Answer:

Step-by-step explanation:

a)  From this statement made in the question: "They use an alphabetized list of members of the Northeast Organic Farming Association (www.nofa.org), a nonprofit organization of over 5000 members", it is easy to deduce that the population size, N is ≥ 5000.

b)  The total farmers record on excel data is the sampling frame. reasonbeing that in statistics, a sampling frame is the source material or device from which a sample is drawn

c) The population parameter of to be used here is :

P = the proportion of organic farmers concerned with the issue that climate change will affect their crop yield among the Whole Population.

d) To draw the sample, of size, n=150, Simple Random Sampling (SRS) is being used  .

With this method in use, the probability of each unit of the population to be selected in the sample is equal to 1/N

First, draw a random number of 4 digits, then reject some random numbers for making equal probability, divide by population size in order to get the remainder . If remainder is denoted with'r' , then the r-th population unit is included in the sample..... Proceeding in this way, we can have a sample of size, n=150.

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