30. your friend is considering two alternative investments, INV1 and INV2. he is uncertain about the percentage returns, but believes that you as a student of analytics will have no issue in modelling the uncertainty using the normal probability distribution. the means and standard deviations for the returns of INV1 are Mean1=12.4, S1=3.2; and for INV2 are Mean2=13.0, S2=6.0. your friend wants to make the investment that is more likely to produce a return at least 11%. what is the probability of the investment of a better choice?