A probabilistic sampling scheme requires all items from the population to have: a known probability of being sampled. an

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A Probabilistic Sampling Scheme Requires All Items From The Population To Have A Known Probability Of Being Sampled An 1 (218.5 KiB) Viewed 23 times

A probabilistic sampling scheme requires all items from the population to have: a known probability of being sampled. an equal probability of being sampled. a non-zero probability of being sampled. the first and third options above. the second and third options above. A questionnaire about patients' quality of life is sent to a random sample of medical clinics across the South Island. Within each sampled clinic, one doctor is randomly sampled and patients of that doctor are given the questionnaire. This design is best described as: a simple random sample. a cluster random sample. a two-stage cluster sample. a stratified sample. the third and fourth options above. A horticulture study at eight Central Otago farms compares two tree management techniques for growing apricots (conventional versus high-intensity), with four farms randomly assigned to each treatment. At each farm, crop yield for 20 trees is measured. Which the following is true? There are 8 experimental units. There are 160 experimental units. This experiment assesses management technique for growing apricots across New Zealand. the first and third options above. the second and third options above. A materials scientist conducts a factorial study measuring the additive) effects of temperature and pressure during manufacturing on the strength of steel. The p-value for the temperature effect was 0.002, while the p-value for the pressure effect was 0.342. All model diagnostics were satisfactory. The materials scientist can reasonably conclude that: there is no effect of temperature and a strong effect of pressure on strength. there is a large effect of temperature on strength. there is no effect of pressure on strength. the second and third options above. none of the above.