STATISTICS Stock market analysts are continually looking for…

STATISTICS Stock market analysts are continually looking for reliable predictors of stock prices.  Consider the problem of modeling the price per share of electric utility stocks (Y-dependent variable).  Two variables thought to influence such stock prices are the return on average equity (X1) and annual dividends (X2).  Using the stock prices, return on average equity and dividend rates on a randomly selected day for 16 utility stocks resulted in the regression output below.   Make a prediction of a utilities stock price if the average return on equity is [RAE] and the dividend rate is [DY] (answer to two decimals i.e. XX.xx)

STOP Before you click submit, check that you have answered a…

STOP Before you click submit, check that you have answered all the questions.  Check at the top of the screen that all your questions have a check mark.  If not, click on the ones that have a (?) to go back and answer the question.  Questions:√Question 1 (?) Question 2

STATISTICS A trucking company wants to predict the annual ma…

STATISTICS A trucking company wants to predict the annual maintenance expense for a truck (Y) using the number of miles driven during the year (X1) and the age of the truck (X2, in years) at the beginning of the year.  The company has gathers historic data on its trucks and expenses and generated the following regression output.   When testing the individual significance of age of truck in the Model, what is the test conclusion at a 10% significance level (i.e. alpha = 0.1)?  

Consider the reactions of cadmium with the thiosulfate anion…

Consider the reactions of cadmium with the thiosulfate anion.                    Cd2+(aq) + S2O32–(aq)  ↔  Cd(S2O3)(aq)                           K1 = 8.3 x 103                   Cd(S2O3)(aq) + S2O32–(aq)  ↔  Cd(S2O3)22–(aq)               K2 = 2.5 x 102 What is the value for the equilibrium constant for the following reaction?                    Cd2+(aq) + 2S2O32–(aq)  ↔  Cd(S2O3) 22–(aq)