Question: 7. Two estimates are available for the same population parameter. Estimate one has a standard deviation of 8.9 and estimate two has a standard

7. Two estimates are available for the same population parameter. Estimate one

7. Two estimates are available for the same population parameter. Estimate one has a standard deviation of 8.9 and estimate two has a standard deviation of 8.2. Estimate two is biased, whereas estimate one is unbiased. Which estimate would you choose and why? 8. Suppose the NIU bookstore sent out surveys to students via e-mail and asks them to fill out questions related to their experience with purchasing books for the semester. This gets sent out to all NIU students with the hope that the bookstore would get enough responses to be a big enough sample and analyze the data. What type of sampling method is being used here?

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