If you only use your debit card and ATM card and rarely write paper checks, overdraft protection is still a good thing to have

Suppose that the standard deviation of monthly changes in the price of commodity A is $2 . The standard deviation of monthly changes in a futures price for a contract on commodity B (which is similar to commodity A) is $3

The correlation between the futures price and the commodity price is 0.9 . What hedge ratio should be used when hedging a one month exposure to the price of commodity A? A. 0.60 B. 0.67 C. 1.45 D. 0.90

Terrestrial microwave transmission

a. requires repeaters in some cases b. requires line-of-sight between the transmitter and receiver c. is subject to noise and interference d. all of the above