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solutions1 - Stat 651 (Winter 2011) Kaizar Homework 1...

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Stat 651 (Winter 2011) Kaizar Homework 1 Solutions 40 points total Exercises 1. Lohr, Chapter 1 problem 4 (10 points) target population: all Maricopa County residents eligible for jury duty (18 years old, no felony record, or other disqualifying condition) and capable of performing jury duty sampling frame: All residents aged 18 years or older who are registered to vote or licensed to drive in Maricopa County sampling unit: one name in the database observation unit: one potential juror possible sources of selection bias or inaccuracy of responses: Oversampling resulted in the inclusion of non-citizens and convicted felons (who are permitted to drive). Under- sampling resulted in the exclusion of valid jurors who choose to not vote or drive. Other sources of nonsampling error includes valid jurors lying about their health or hardship to get out of jury duty, or simply not appearing in court for duty. 2.
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solutions1 - Stat 651 (Winter 2011) Kaizar Homework 1...

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