Many scientific studies of dietary health effects are observational. Compared to experimental studies, observational studies can extend over a longer time period, use a more representative population, and measure disease outcomes in addition to risk factors for disease. In an observational study, researchers enlist a study group, and use questionnaires and medical tests to quantify participants' health behaviors and status at the start of the study. The researchers continue to collect data on the participants over many years. Information about each particpant's diet, lifestyle habits, risk factors, and disease outcomes are all recorded and analyzed.

The selling price of houses would be most likely to decrease if there were first a decrease in which of the following? a. new-housing construction. b. mortgage interest rates. c. the unemployment rate. d. construction workers' wages. 2b2t

6carla would like to buy a dress, a dresser for her bedroom, and a home theater system. she has one month's worth of living expenses in her emergency fund. carla decides to save for the home theater system. did carla make the right decision? why or why not? a. yes; her emergency fund is full and the other items will probably be less expensive. b. yes; she could save more for her emergency fund, but the home theater will be harder to save for. c. no; she should save more for her emergency fund because she has saved less than the recommended amount. d. no; she should have bought the dress and dresser first because she could afford them right away. reset next

What is an equation of the line in slope intercept formm = 4 and the y-intercept is (0,5)y = 4x-5y = -5x +4y = 4x + 5y = 5x +4