Would like to ask is Crypto market correlated to Stock market ?
Not directly. Sometimes we have seen opposite site movements in stocks but whether that was due to crypto being dumped to buy stocks is debatable and not verifiable. You should know that stock markets are very much regulated. You wont find people buying and selling huge volumes to crash their markets everyday but this is very common on bitcoin markets.
And can we apply Stock investment strategy & technique in Crypto market

You can apply similar technical and fundamental analysis. If you are looking forward to trade in crypto market a background knowledge of stock markets will definitely help you and frustrate you at some points.
