1. The Gallup Organization contacts 1,426 undergraduates who attend a college and live outside the U.S. and asks whether or not they had taken a course in a conversational English during their studies.
-What is the population in the study?
-What is the sample in the study?
2. Identify the type of observational study (cross-sectional, retrospective, or prospective) describe below
-A research company uses a device to record the viewing habits of about 10,000 households and the data collected over the next 4 years will be used to determine whether the proportion of households tuned to a particular educational program decreases.
5) Which is relatively better: a score of 73 on a Psychology test or a score of 56 on a Economics test? Scores on a psychology test have a mean of 91 and a standard deviation of 9. Scores on the economics test have a mean of 63 and a standard deviation of 3?
-What is the population in the study? all undergraduates who attend a college and live outside the U.S.
-What is the sample in the study? 1,426 undergraduates
prospective type because the data will be collected ...
The solution gived detailed steps on solving various questions on the statistical concepts and normally distributed data as well. All formula and calcuations are shown and explained.