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10.1 Two Population Means with Unknown Standard Deviations

Baseball-Almanac. (2013). World series history. Retrieved from

Graduating Engineer + Computer Careers. (n.d.). Retrieved from

Microsoft Bookshelf. (n.d.).

Nasdaq. (n.d.). Sectoring by industry groups. Retrieved from

U.S. Senate. (n.d.). Retrieved from

Wikipedia. (n.d.). List of current United States Senators by age. Retrieved from

10.2 Two Population Means with Known Standard Deviations

Centers for Disease Control and Prevention. (2008, July 18). State-specific prevalence of obesity among adults—United States, 2007. MMWR, 57(28), 765–768. Retrieved from

Federal Bureau of Investigation. (n.d.). Texas Crime Rates 1960–1012. Available at

Hinduja, S. (2013). Sexting Research and Gender Differences. Cyberbulling Research Center. Retrieved from

Humes, K. R., Jones, N. A., & Ramirez, R. R. (2011 March). Overview of race and Hispanic origin: 2010 (2010 Census Briefs). Washington, DC: U.S. Census Bureau. Available online at

Smith, A. (2011, July 11). 35% of American adults own a smartphone. Pew Internet. Available online at

Visually. (2013). Smart phone users, by the numbers. Retrieved from

10.3 Comparing Two Independent Population Proportions

American Cancer Society. (n.d.). Retrieved from

Centers for Disease Control and Prevention. (n.d.). West Nile virus. Retrieved from

Chancellor’s Office, California Community Colleges. (1994, Nov.).

Educational Resources. (n.d.).

Gallup. (2013). State of the states. Retrieved from

Hilton Hotels. (n.d.). Retrieved from

Hyatt Hotels. Retrieved from

San Jose Museum of Art. (n.d.). Whitney exhibit (on loan).

U.S. Department of Health and Human Services. (n.d). Statistics. Retrieved from

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