A rigorous study conducted by the Swedish army showed that young men who were heavy cannabis users by age 18 were _______ times more likely to develop schizophrenia than those who weren't. O 3 O 4.5 O 6 O 10.3
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Consider a study in which people were recruited and followed for 40 years to determine their health problems. The researchers were interested in lung cancer so at the end of the study they counted the number of participants who had died from lung cancer, or currently had it, and those that did not. They also counted how many were non-smokers their whole life or had been smokers at some point in their lives. The number of non-smokers with lung cancer was 36 and the number of non-smokers with no sign of lung cancer was 815. The number of smokers with lung cancer was 26 and the number of smokers with no sign of lung cancer was 161. What is the relative risk of lung cancer for participants who were smokers? 4.55 3.29 4.02 3.66
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Adi S.
1. The following are prices for a 25-inch TV found in different stores around Roseville: tv <- c(104, 135, 138, 70, 140, 114, 113, 69). What is the shape of the distribution? A. Skewed to the right B. Symmetric C. Skewed to the left D. Uniform E. Bell-shaped 2. A recent study in The Lancet found that "risk of psychosis is three times higher for users of potent 'skunk-like' cannabis than for non-users." The study consisted of individuals who had experienced a first episode of psychosis, as well as healthy controls. Each participant filled out the Cannabis Experience Questionnaire modified version (CEQmv), from which investigators were able to obtain a detailed history of cannabis use, as well as information on the history of use of tobacco, alcohol, and other recreational drugs. Which of the following is a variable in this study? A. the number of individuals who experienced a first episode of psychosis B. the average age of study participants C. the percent of study participants that are Asian D. the participant's most used type of cannabis (classified as never used, hash-like, and skunk-like) E. the risk of psychosis is 3 times higher
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