FirstName EHS 280 Midterm LastName, Use the histograms shown to answer the quest
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Question
FirstName EHS 280 Midterm LastName, Use the histograms shown to answer the question. Nu ber of Inspections Nuber of Inspecti 24) 24) Is either histogram symmetric? A) Neither is symmetric. B) The first is symmetric, but the second is not symmetric. C) The second is symmetric, but the first is not symmetric. D) Both are symmetric. Determine whether the study depicts an observational, experiment or convenience. 25) A poll is conducted in which randomly selected NPs and PAs were asked 26)A pollster obtains a random sample of students and asks them how they will A) Experiment B) observational study C) Convenience their age A) Experiment B) observational study C) Convenience vote on a referendum. 26) 27) A scientist was studying the effects of a new fertilizer on crop yield. She randomly assigned half of the plots on a farm to group one and the remaining plots to group two. On the plots in group one, the new fertilizer was used for a year. On the plots in group two, the old fertilizer was used. At the end of the year the average crop yield for the plots in group one was compared with the average crop yield for the plots in group two. A) Experiment B) observational study C) Convenience 27 28) A researcher obtained a random sample of 100 smokers and a random sample of 100 nonsmokers. After interviewing all 200 participants in the study, the researcher compared the rate of depression among the smokers with the rate of depression among nonsmokers. A) Experiment B) observational study C) Convenience 28)Explanation / Answer
24.
Symmetric histogram looks like this.
Hence answer is A. Neither is symmetric
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