This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Biostats, Subject name: Social & Preventive Medicine
If we say that here is no significant association between two variable and if truly an association exists. Then it is called: 
Select and explain. 
A. Type I error, B. Type II error, C. Systematic error, D. Random error
B: Type II error
Answer: B: Type II error 
Explanation: Null hypothesis (H0) there is No significant association In the given question, In reality an association exists, So Null hypothesis is false We say no significant association exists, so we are accepting Null hypothesis Hence its Type II error