This is a bit of a trick question. Its purpose is to emphasize to you the general applicability of formula [3]. To solve the problem, recognize that Z = A + B. You know the standard deviations and correlation of A and B, so you can directly apply [3] to obtain a standard deviation for Z. The result is 4.74. The information that B = A2 2A 4 is irrelevant. [Return]
|
