expected return and standard deviation.

state of E, boom growth stagnant recession probability of S, 0.29. 0.36. 0.22. 0.13 return on AssetJ 0.055. 0.055. 0.055. 0.055 return on assetK. 0.190. 0.100. 0.040. -0.080 return on assetL. 0.280. 0.190. 0.050. -0.180

what is the expected return of each asset?

what is the variance and the standard deviation of each asset?

what is the expected return of a portfolio with 9% in asset j. 48% in asset K, and 43% in asset L?

what is the expected return of asset J?