After taking the first exam, 15 of the students dropped the class. Statistic Par

Question

After taking the first exam, 15 of the students dropped the class. Statistic Parameter At a college there are 120 freshmen, 90 sophomores, 110 juniors, and 80 seniors. A school administrator selects a simple random a simple random sample of 12 of the freshmen, a simple random sample of 9 of the sophomores, a simple random sample of 11 of the juniors, and a simple random sample of 8 of the seniors. She then interviews sampling all the students selected. Identify the type of sampling used in this example. Simple random sampling Stratified sampling Cluster sampling Systematic random sampling A statistics student's presentation of the results of her study included many charts, graphs, and tables. Identify the kind of statistical study conducted. The study was necessarily inferential. The purpose of the study may have been completely descriptive it might have been inferential. The study was purely descriptive. An education researcher randomly selects 38 schools from one school district and interviews all the teachers at each of the 38 schools. Identify the type of sampling used In this example. Systematic random sampling Stratified sampling Ouster sampling Simple random sampling Thirty of the 198 students enrolled in Statistics 101 were asked If they wonted Exam 11 to be a take-home or an in-class assessment. Twenty, or about 67%, of the students polled Indicated a preference for an in-class exam. The professor concluded that the majority of students In Statistics 1101 would prefer an in-class examination for the second assessment. Did the professor perform a descriptive study or an inferential study? Inferential Descriptive A pollster uses a computer to generate 500 random numbers and then Interviews the voters corresponding to those numbers. Identify the type of sampling used in this example. Systematic random sampling Ouster sampling Stratified sampling Simple random sampling Identify the number as either continuous or discrete. The height of 2-year-old maple tree is 283 ft. Continuous Discrete The total number of phone calls a sales representative makes in a month is 425. Discrete Continuous The speed of a car in miles per hour. Qualitative Quantitative

Explanation / Answer

23. the speed of a car in miles per hour is a quantitative variable.

22. the total num of phone calls in a month is a discrete.

21. the height is continuous.

20. simple random sampling.

19. inferential study.

18. stratified random sampling.

17. the study was purely discriptive.

16. cluster sampling

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.