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Chapter 11: The Chi-Square Distribution

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Introductory Statistics
Pages: 621 - 678
Introductory Statistics

Introductory Statistics

Book edition OER 2018
Author(s) Barbara Illowsky, Susan Dean
Pages 902 pages
ISBN 9781938168208

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Illustration

162 Questions for Chapter 11: The Chi-Square Distribution

  1. df= ________

    Found on Page 668

  2. A sample of 300students is taken. Of the students surveyed,50were music students, while 250were not. Ninetyseven were on the honor roll, while203 were not. If we assume being a music student and being on the honor roll are independent events, what is the expected number of music students who are also on the hon

    Found on Page 634

  3. Do families and singles have the same distribution of cars? Use a level of significance of 0.05. Suppose that 100randomly selected families and 200randomly selected singles were asked what type of car they drove: sport, sedan, hatchback, truck, van/SUV. The results are shown in Table 11.20.Do families and singles have the same distribution of cars? Test at a level of significance of 0.05

    Found on Page 639

  4. Is this a right-tailed, left-tailed, or two-tailed test? Explain why.

    Found on Page 657

  5. Graph the situation. Label and scale the horizontal axis. Mark the mean and test statistic. Shade in the region corresponding to the p-value.

    Found on Page 657

  6. What is the p-value?

    Found on Page 658

  7. D

    Found on Page 654

  8. If the number of degrees of freedom for a chi-square distribution is 25, what is the population mean and standard deviation?

    Found on Page 652

  9. A teacher predict that the distribution of grades on the final exam will be and they are recorded in tab

    Found on Page 654

  10. A 2013poll in California surveyed people about taxing sugar-sweetened beverages. The results are presented in the Table and are classified by ethnic group and response type. Are the poll responses independent of the participants’ ethnic group? Conduct a test of independence at the 5%significance level.

    Found on Page 665

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