This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: JIPMER 2017, Subject name: Social & Preventive Medicine
[{'content': 'All of the following are true regarding increasing sample size except:- \nSelect and explain. \nA. Decreases power of test, B. Standard error of mean decreases, C. Decrease in Confidence interval, D. Decreases alpha error', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Increase in sample size leads to: Decrease in Confidence interval i.e., gives more precise estimates. Decrease in Alpha error i.e, less chance of type 1 error. Decrease in Standard error of mean. Increase in Power of test.', 'role': 'assistant'}]