A simple random sample of size n is one in which: (circle the best choice) Every

Question

A simple random sample of size n is one in which: (circle the best choice) Every nth member is selected from the population. Each possible sample of size n has the same chance of being selected. There is exactly the same proportion of women in the sample as is in the population. You keep sampling until you have number of people having various characteristics (e.g., males, females, etc.) Suppose a veterinary inspector needs to inspect the animals at a local zoo to determine whether they are healthy and being well-cared for. The table shows the animals and their respective groups. Using your calculator, find a simple random sample of 8 animals. (State your calculator entry and the results). Suppose the reptile enclosure is the first thing the vet sees when she walks into the zoo and so she decides to just get all 8 animals from that area. What kind of sample is this? Suppose a SRS of the animals yields: 12, 31, 33, 20, 28, 16, 37 and 40. Explain why, even though this was a SRS, it would not be a good sample. Explain how the vet could take a good sample of size 8 that fairly represented all 4 groups of animals and was not biased.

Explanation / Answer

Here,

Random Sample: Each member of the entire population has an equal chance of being selected.

Simple Random Sample: You can select groups of size n from the entire population, and every possible group has the same chance of being selected.

So correct optionis b.Each possible sample of size n has same chance being selected

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