This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Social & Preventive Medicine
[{'content': 'Study find a correlation coefficient of +0.7 between self repoed work satisfaction and expectancy of life in a random sample of 5000 corporate workers. (p = 0.01). This means ? \nSelect and explain. \nA. Work satisfaction improves life expectancy, B. Strong statistically significant (+) association between work satisfaction and life expectancy, C. 70% people who enjoy work shall live longer, D. 70% association between work satisfaction and life expectancy', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans is 'a' i.e. Work satisfaction improves life expectancy Correlation coefficient + 0.70 means moderate postive linear relationship, that means work satisfaction will moderately improve life expectancy", 'role': 'assistant'}]