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A case-control study was conducted to identify exposures associated with a neurologic disorder in adolescents that is characterized by headaches and in a few severe cases, seizures. Cases (persons with the neurologic disorder) were compared to a randomly selected control group of adolescents without the disorder from the same schools the cases attended. The results of the study showed that the odds ratio for the disease, comparing those who played video games every day to those who did not play video games every day (the exposure), was 2.1. The researchers also found an odds ratio of 0.60, comparing those who regularly read books (other than school textbooks) to those who did not.
How would you interpret the odds ratio for the video game exposure?
Complete the table and use this information to determine whether there is any evidence that the population mean wattage of spotlights is different among the four theaters. Use a = 0.05.
Of the students who scored around 50 on the midterm, about what percentage were in the top 25% of the class on the final?
a high school math teacher gave her 30 students a math exam. in this exam the average scores for the high school
Glass crystallizes as it ages. What does that say about the change in chemical potential between the amorphous and crystallinc phases?
Health. The probabilities that an adult American man has high blood pressure and/or high cholesterol are shown in the table.
Brain Size Brain size for 20 random women and 20 random men was obtained and is reported in the table (in hundreds of thousands of pixels shown in an MRI).
Assume that the number of calories in a McDonald's Egg McMuffin is a normally distributed random variable with a mean of 290 calories and a standard deviation of 14 calories. What is the probability that a particular serving contains fewer than 300..
What is the probability that all five intervals cover the true means? What is the probability that at least four of the five intervals cover the true means
Calculate the percentage of eggs in each group that hatched. The researchers anticipated that eggs would not hatch in the cold environment.
Which chart indicates the trend in forecast values as a particular decision variable is varied
Do you believe that the government should or should not be allowed to prohibit teachers from expressing their religious beliefs in public schools classrooms?
the damon family owns a large grape vineyard in western new york along lake erie. the grapevines must be sprayed at the
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