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Insurance companies are interested in the average health costs each year for their clients, so that they can determine the costs of health insurance. Define the following in terms of the study. Give examples where appropriate.
A politician is interested in the proportion of voters in his district that think he is doing a good job. Define the following in terms of the study. Give examples where appropriate.
A marriage counselor is interested in the proportion the clients she counsels that stay married. Define the following in terms of the study. Give examples where appropriate.
Political pollsters may be interested in the proportion of people that will vote for a particular cause. Define the following in terms of the study. Give examples where appropriate.
A marketing company is interested in the proportion of people that will buy a particular product. Define the following in terms of the study. Give examples where appropriate.
Airline companies are interested in the consistency of the number of babies on each flight, so that they have adequate safety equipment. Suppose an airline conducts a survey. Over Thanksgiving weekend, it surveys 6 flights from Boston to Salt Lake City to determine the number of babies on the flights. It determines the amount of safety equipment needed by the result of that study.
Suppose you want to determine the average number of students per statistics class in your state. Describe a possible sampling method in 3 – 5 complete sentences. Make the description detailed.
Suppose you want to determine the average number of cans of soda drunk each month by persons in their twenties. Describe a possible sampling method in 3 - 5 complete sentences. Make the description detailed.
726 distance learning students at Long Beach City College in the 2004-2005 academic year were surveyed and asked the reasons they took a distance learning class. ( Source: Amit Schitai, Director of Instructional Technology and Distance Learning, LBCC ). The results of this survey are listed in the table below.
| Convenience | 87.6% |
| Unable to come to campus | 85.1% |
| Taking on-campus courses in addition to my DL course | 71.7% |
| Instructor has a good reputation | 69.1% |
| To fulfill requirements for transfer | 60.8% |
| To fulfill requirements for Associate Degree | 53.6% |
| Thought DE would be more varied and interesting | 53.2% |
| I like computer technology | 52.1% |
| Had success with previous DL course | 52.0% |
| On-campus sections were full | 42.1% |
| To fulfill requirements for vocational certification | 27.1% |
| Because of disability | 20.5% |
Assume that the survey allowed students to choose from the responses listed in the table above.
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