This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Biostatistics, Subject name: Social & Preventive Medicine
Type 1 Sampling error is classified as- 
Select and explain. 
A. Alpha error, B. Beta error, C. Gamma error, D. Delta error
A: Alpha error
Answer: A: Alpha error 
Explanation: <p> Alpha error. In Type 1 error , Null hypothesis is true but rejected. Probability of Type 1 error is given by &;P&; value. Alpha is fixed in advance: P value calculated can be less than , equal to or greater than alpha. Reference: Simple Biostatistics by Indeayan & Indrayan,1st edition,pg no:155-57 and Methods in Biostatistics by Mahajan,7 th edition,pg no:111-113. <\p>