Introduction To Statistics And Data Analysis
6th Edition
ISBN: 9781337793612
Author: PECK, Roxy.
Publisher: Cengage Learning,
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Textbook Question
Chapter 2.2, Problem 31E
The financial aid advisor of a university plans to use a stratified random sample to estimate the average amount of money that students spend on textbooks each term. For each of the following proposed stratification schemes, discuss whether it would be worthwhile to stratify the university students in this manner. (Hint: Remember that it is desirable to create strata that are homogeneous.)
- a. Strata corresponding to class standing (freshman, sophomore, junior, senior, graduate student)
- b. Strata corresponding to field of study, using the following categories: engineering, architecture, business, other
- c. Strata corresponding to the first letter of the last name: A–E, F–K, etc.
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Check out a sample textbook solutionStudents have asked these similar questions
In a recent survey of a fair stratified random sample of the population,a question appeared as:Do you plan to vote in favor of the speed limit change?Yes/No.A scientist found the following number of responses per stratum:
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(d)If three people are picked at random from the sample,what is the probability that at least one did not respond to this question?
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A statistics instructor asks each student in his classes to report how much the student spent on textbooks for the semester. The figures reported by students are shown below.
725
735
555
420
385
480
505
270
405
285
585
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545
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365
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345
555
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465
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465
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Chapter 2 Solutions
Introduction To Statistics And Data Analysis
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