The article “Inconsistent Health Perceptions for US Women and Men with Diabetes” (M. McCollum, L. Hansen, et al., Journal of Women’s Health, 2007:1421–1428) presents results of a survey of adults with diabetes. The average body mass index (BMI) in a sample of 1559 men was 30.4, with a standard deviation of 0.6. The average BMI in a sample of 1924 women was 31.1 with a standard deviation of 0.2. Find a 99% confidence interval for the difference in mean BMI between men and women with diabetes.
Chapter 1 Classification of Matter -Elements -Simplest form of a matter -Cannot be broken down -Mixtures -Heterogeneous- can see two or more different types of matter with eye or magnification, Milk, Fizzy soda, -Homogeneous- Looks alike throughout, even under magnification, Brass, Black Coffee -Properties -Extensive- Depends on quantity of sample -Volume, length, mass, total cost -Intensive- Independent on quantity of sample -Color, Taste, Density, boiling point of water, price per unit, Concentration of salt in water, Luster/shininess Chapter 2 Factor Label Method A high school student earns 10 for every lawn she mows. She wants to save money to purchase five concert tickets for her and her friends at 50 each. How many lawns does she have to mow 5 tickets x 50$/1ticket x 1 lawn/$10=25 lawns The high school student has five weekly lawn customers. How long will it take to mow 25 lawns 25 lawns 1 week/5 lawns=5 weeks Exponential Numbers Metric System Significant figures -Multiplying and dividing significant figures -The number with the fewest S.F. will determine the S.F. of the answer 4.586x54.321=249.1 94.5/12=7.9 1.302x10^4/5.32x10^5=
