A researcher has compiled a file of information on a random sample of 317 families that have chronic, long-term patterns of child abuse.  Reported below are some of the characteristics of the sample, along with values for the city as a whole.  For each trait, test the null hypothesis of "no difference."  You must state your hypotheses; compute the test statistic; and explain your decision for each. **For at least one of the following problems, conduct both a one-tailed and a two-tailed test.  For the other problems, a two-tailed test is fine.**

College Algebra
1st Edition
ISBN:9781938168383
Author:Jay Abramson
Publisher:Jay Abramson
Chapter9: Sequences, Probability And Counting Theory
Section9.7: Probability
Problem 1SE: What term is used to express the likelihood of an event occurring? Are there restrictions on its...
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A researcher has compiled a file of information on a random sample of 317 families that have chronic, long-term patterns of child abuse.  Reported below are some of the characteristics of the sample, along with values for the city as a whole.  For each trait, test the null hypothesis of "no difference."  You must state your hypotheses; compute the test statistic; and explain your decision for each.

**For at least one of the following problems, conduct both a one-tailed and a two-tailed test.  For the other problems, a two-tailed test is fine.**

 

d.  Father's educational achievement  (average years formal schooling)

City:  mean = 12.3                    Sample:  mean = 12.5, s = 1.7

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