www-awu.aleks.com (05) Bad Bunny - 14. A ALEKS - Maria Fell. Readeru: Netflix HE OBJECTIVE 1- 202. O DESCRIPTIVE STATISTICS E Identifying and reducing statistical bias There were 2 residents who showed up at the park. Of these, 52 said they oppose spending money to renovate the old theater. (a) Identify and describe the most prominent source of blas in Jenny's study. Choose the best answer from the choices below. The bias comes from having too many of the residents who showed up to the park who did not respond to the question. These residents might answer the question differently than those who did. The blas comes from the phrasing of the question and the context in which it is asked. The responses are unlikely to be truthful. The blas comes from the sampling done in the study. Jenny only sampled from residents of the town, so the sample is a sample of convenience. The blas comes from the fact that the residents voluntarily chose to be in the sample by showing up to the park. Volunteers are likely to have characteristics that do not reflect the population as a whole. There is no or very little blas in Jenny's study. The sample size is larger than 30, so it is large enough to eliminate any potential source of bias. (b) Describe something Jenny could have done to reduce the most prominent source of bias in the study. Choose the best answer from the choices below. Change the phrasing of the question and make sure that the residents who showed up to the park could answer the question anonymously. That way the residents would be more likely to answer truthfully. O'Expand the study to include all residents of the state. This way the sample is no longer a sample of convenience. Modify the study so that Jenny chooses the sample, ideally a random sample, of the residents who participate. That is, modify the study so that the residents do not voluntarily choose to be in the sample. Run follow-up advertisements reminding the town's residents to come to the park on Monday afternoon. That way the number of residents who do not respond would be decreased. As the sample size is sufficiently large, the study has no or very little bias. So, there is nothing Jenny needed to have done to reduce bias. Explanation Check