alpha decay tne menes valy widuery, Wnclcer the emitted alpha particles vary little (3 marks) The following expression holds for the half-life of an alpha emitter: (b) where C and D are (approximately) constant and D4 if Ea is in units of MeV Use this formula to calcuiate the ratio of the half-lives of Ra (a 5.685 MeV) and Ra (Ea 7.453 MeV). Compare your result with the ratio of the experimentally observed half-lives for 3 Ra (r 3.66 days)...
please answer Question 3 20 pts Assume that there are three assets that you can own: Cash (lowest risk), Bonds (medium risk) Stocks (high risk) The economy has just experience a financial crisis so investors become VERY VERY risk averse. Under these conditions you would expect interest rates to (choose the best answer) O Decrease because bond prices would fall. O Decrease because bond prices would rise O Increase because bond prices would fall. O Increase because bond prices would...
Please solve the problems (d),(e),(f),(g) 3. (20 pts) Do not use a computer to complete the answers for this problem. Show your work in all problems. Consider the following data: 2 -2 2 1 0 4 0 2 10 0 -2 8 Consider the multiple regression model where ci ~ iid N(0, σ*) for i 1, 2, 3, 4, 5. (a) Fill in the values for response vector, design matrix and coefficient vector: X- (b) Find the vector of least...