6. (Sec. 5.1) Two components of a minicomputer have the following joint pdf for their useful lifetimes X and Y . f(x, y) = ( xe−x(y+1) for x ≥ 0, y ≥ 0 0 otherwise (a) What is the probability that the lifetime X of the first component exceeds 3? (b) Find the marginal pdfs of X and Y . Are the two lifetimes independent? Justify your answer. (c) What is the probability that the lifetime of at least one component does not exceed 3?

Transactions that affect earnings do not necessarily affect cash. identify the effect, if any, that each of the following transactions would have upon cash and net income. the first transaction has been completed as an example. (if an amount reduces the account balance then enter with negative sign preceding the number e.g. -15,000 or parentheses e.g. (15, cash net income (a) purchased $120 of supplies for cash. –$120 $0 (b) recorded an adjustment to record use of $35 of the above supplies. (c) made sales of $1,370, all on account. (d) received $700 from customers in payment of their accounts. (e) purchased equipment for cash, $2,450. (f) recorded depreciation of building for period used, $740. click if you would like to show work for this question: open show work

Select the correct answerwhat is the responsibility of each of the twelve federal reserve's banks in their districts? a.they set the prime rateob.they monitor functioning of banks in their through onsite and offsite reviewsc.they assess taxes in their destnictd.they write fiscal policies

The servers at gerry frasier's busy ice cream shop decided that putting more ice cream in the sundaes and cones would bring back more customers. after three months, gerry was surprised to discover that his profit had