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1) A statistician working for the Department of the Interior is constructing a systematic random sample of trees in a forest preserve. The...

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1) A statistician working for the Department of the Interior is constructing a systematic random sample of trees in a forest preserve. All trees have been identified and numbered with a non- invasive number attached to the bark. The statistician wishes to estimate the mean height of the trees in the forest preserve, and has calculated an appropriate sample size of n=43 trees. The 587th of the 731 trees in the preserve was selected as the first observation in the sample. What is the tree number of the second observation in the sample? A. 604 B. 588 C. 630 D. 544 2) A poll is planned to determine what proportion of all students favor an increase in fees to support a new track and field stadium. A questionnaire will be published and the first 1000 completed questionnaires will be analyzed. Which of the following errors will be associated with the sample? A. Only non-sampling errors B. Errors due to interviewer bias and selection bias C. Sampling errors only D. Sampling errors and errors due to selection bias 3) A survey was mailed to a total of 400 students; 100 were randomly selected from each of the freshman, sophomore, junior and senior classes last semester. What sampling method was used? A. Systematic sample B. Stratified sample C. Simple random sample D. Cluster sample 4) The collection and summarization of the socioeconomic and physical characteristics of the employees of a particular firm is an example of A. a parameter. B. descriptive statistics. C. a statistic. D. inferential statistics. 5) Which of the following is not a reason one should have knowledge of statistics? A. To help interpret existing information B. To make future projections of one’s sales C. To be able to mount an effective effort to change a government regulation that negatively affects one’s business D. To increase the amount of information available for use 6) Which of the following is an example of statistical inference?
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A. Calculat ing the mean age of patients discharg ed from hospitals in New York State in 1997. B. Calculat ing the mean number of fruit trees damage d by Mediterr anean fruit flies in Californ ia last year. C. Calculat ing the amount of fly spray needed for your orchard next season.
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1) A statistician working for the Department of the Interior is constructing a systematic random
sample of trees in a forest preserve. All trees have been identified and numbered with a noninvasive...

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