can someone please complete this in excel provding formulas?

Fin 311 Dr. Haddad Given the above data on the state of the economy and the probability of Stock 1,2 \& 3 expected Rates of return, answer the following questions. 1-Compute the expected Rate of Return for each stock 2- Compute the Variance and Standard Deviation for each stock 3-Compute stocks Covariance and Correlation between stock (1,2)=(2,1),(1,3)=(3,1) and (2,3)=(3,2). 4-What would be the expected Rate of Return of a portfolio comprised of 25% invested in stock 1,35% in stock 2 and 40% in stock 3. 5- Compute the Variance and Standard Deviation of the portfolio