Hello Kewal. Thanks for your reply. Actually I wrote few articles before on p-value, t-stat, confidence interval. I did not want to repeat. Because that makes the article too long. Here is an article on basic understanding of hypothesis testing:

https://towardsdatascience.com/hypothesis-testing-characteristics-and-calculation-ba3bdf516ea5

This one is on Confidence interval:

https://towardsdatascience.com/confidence-interval-calculation-and-characteristics-1a60fd724e1d

Please check. Thanks for reading my article!