C) An analyst has developed the following probability distribution of the rate of return for a common stock: Rate of Return Probabili 1] Calculate the expected rate of return. {Tpts} 2] Calculate the variance and standard deviation. [3pts] I!) The systolic blood pressure in healthy adults is normally distn'buted with a mean of 112 mmHg and a standard deviation of 12 mmHg. (Show your work) 1} What percent of healthy adults have a systolic blood pressure belovlr 105'? {101m} 2} \"Phat percent of healthy adults have a systolic blood pressure above 125'? {10ml 3] \"'hat percent of healthy adults have a systolic blood pressure between 110 and 121}? {lpts} 4} \"'hat is the lowest systolic blood pressure of the top 5% of the distribution? {101m}