# Past Exam for 960 211 - STATISTICS I at Rutgers (RU)

## Exam Information

 Material Type: Final Professor: Staff Class: 960 211 - STATISTICS I Subject: STATISTICS University: Rutgers University Term: Spring 2003 Keywords: SignificanceLevel of SignificanceFollowing ValuesDefinitionsSampling ErrorPrescriptionInterpretationIndividualsPoint EstimateSignificance Level  ## Sample Document Text

960:211:01 Spring 2003 Elementary Statistics I Review Problems for the Final Exam 1. Know your terms and definitions, and study Quizzes #2 through #4. Use the review sheet for Exam #2 as a study guide for the material in Chapters 4-5. 2. A random sample of 76 children between the ages of 4 and 5 are taken, and their weights were measured. The sample mean was 34.5 pounds, and the sample standard deviation was 2.74 pounds. (a) Compute a 90% confidence interval for the true mean weight of children between the ages of 4 and 5. (b) Compute a 95% confidence interval for the true mean weight of children between the ages of 4 and 5. (c) In reference to parts (a) and (b), which interval is wider? Why is that the case? (d) Compute the needed sample size to estimate the true mean weight of children between the ages of 4 and 5 with a maximum error tolerance of 1 pound at 95% confidence. 3. CNN has just conducted a poll and wants you to analyze the results. Seven hundred people were asked how th...

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