In order to eat the vegetable samples analyzed in the laboratory. Researchers will collect samples of vegetables from the farmer's planting vegetables with green leaves convert people to interview. By defining the size of the sample of green leaves to collect samples to analyze in the lab because of a limited budget for research is to determine the number of sample. Eat the vegetables that take to analyze a sample of 6 are as follows: 1. General 2 grown vegetables, for example, 2. non-toxic, 2 vegetable samples grown in the organic vegetable 3.2, for example, by means of a simple random sample of each group (John wonki, chakesom 2553)
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