Question The lognormal model for stock prices is given by S(4)= 100e012+0.22, where Z~ N(0, 1). Determine the value of o² in the model, the variance of stock's return. Question The lognormal model for stock prices is given by S(4) 100e0.12+0.22, where Z~ N(0, 1). Determine the stock's continuously compounded expected rate of appreciation.

A survey was conducted and asked: "Do you consider your health to be poor?" This was coded as 1 for "yes" and 0 for "no." The effect of age (in years) and sex (1 male, 0 = female) on the outcome was examined using logistic regression. The fitted logistic model is: = logit(ô) = −0.544 + ß * sex + 0.0331 * age (a) What are the odds of responding "yes" for a female subject who is 60 years old? (b) What is the estimated odds ratio corresponding to the age variable? Interpret this estimate. (c) Suppose that, based on the data from the survey, the odds of responding "yes" for males are 3.79% greater than the odds for females, adjusting for age. What is the value of Â? (d) If we only wanted to assess the association between survey response (yes/no) and sex, what other method(s) (that we have learned in this class) could we have used (name at least one)? In your own words, explain why we cannot use the same method(s) if we want to consider the effects of both sex and age on survey response.

What do you mean by Generalized method of moments? illustrate regression model with exogenous variables Z?

un a regression analysis on the following data set, where yy is the final grade in a math class and xx is the average number of hours the student spent working on math each week. hours/weekx Gradey 8 55.2 8 62.2 8 53.2 10 70 13 83.2 15 78 17 100 18 87.2 20 100 20 100 State the regression equation with constants accurate to 2 decimal places.ˆyy^ =  x + What is the predicted value for the final grade when a student spends an average of 7 hours each week on math?