bri994
05.05.2020 •
Social Studies
Researchers conduct a prospective study of the relationship between alcohol consumption and motor vehicle accidents and find the risk ratio of getting in an accident in the next year for the alcohol drinkers compared to non-drinkers is 4.5 with a confidence interval of 3.2-6.9. This suggests that:
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Ответ:
daily alcohol consumption is associated with an increased risk of motor vehicle accidents
Explanation: With a high risk ratio gotten when comparing accident risk between alcohol drinkers and non-alchol drinkers, which equals 4.5, meaning accident involving alcohol drinkers is likely to be 4.5 times that involving non-alcohol drinkers. This fact coupled with a confidence interval in the range 3.2 to 6.9, leading us to believe that the relationship between alcohol consumption and motor accident is not just a mere coincidence. Thus daily alcohol consumption is associated with an increased risk of motor vehicle accident.
Ответ:
Earthworms are very sensitive towards the odor.
They use it for locating the food in the soil. Because earthworms are dependent upon microorganism in the soil, they must be sensible for the presence of any food around them if they do not respond the odor then they may die.
Earthworms have the escape response so they quickly respond the external stimuli at the part they are stimulated. With the increasing frequency of stimuli at the same part they slowly decrese the response towards it.