商务统计学-2025期中考试卷

《商务统计》期中考试试题Part I: 单选题 (每题 2 分，共 60 分)1. The universe or "totality of items or things" under consideration is calleda) a sample.b) a population.c) a parameter.d) a statistic.2. Which of the following is most likely a population as opposed to a sample?a) respondents to a newspaper survey.b) the first 5 students completing an assignment.c) every third person to arrive at the bank.d) registered voters in a county.3. A study is under way in Yosemite National Forest to determine the adult height of American pine trees. Specifically, the study is attempting to determine what factors aid a tree in reaching heights greater than 60 feet tall. It is estimated that the forest contains 25,000 adult American pines. The study involves collecting heights from 250 randomly selected adult American pine trees and analyzing the results. Identify the variable of interest in the study.a) The age of an American pine tree in Yosemite National Forest.b) The height of an American pine tree in Yosemite National Forest.c) The number of American pine trees in Yosemite National Forest.d) The species of trees in Yosemite National Forest.4. The British Airways Internet site provides a questionnaire instrument that can be answered electronically. Which of the 4 methods of data collection is involved when people complete the questionnaire?a) Published sourcesb) Experimentationc) Surveyingd) Observation5. To monitor campus security, the campus police office is taking a survey of the number of students in a parking lot each 30 minutes of a 24-hour period with the goal of determining when patrols of the lot would serve the most students. If X is the number of students in the lot each period of time, then X i...