Hi I have some confusion on p value. 1. In Normal distribution curve, P value represents data is normal or something else. If p value >0.05 then we are considering data is normal. why ? Is it p value and alpha value, confidence level's are interlink. 2. In Normal distribution curve, if p value > 0.05, can we take mean value? Can any one clarify on this. 3. Why we are mentioning always LSL = N/A or some value. Any reason for not mentioning LSL = 0. Thanks in advance.