A person's nickname or initials that indicate his or her intent are not considered binding signatures

Customers are serviced at a rate of four customers per hour according to an exponential distribution. What is the probability that customer service will require fewer than 30 minutes?

A) less than or equal to 0.50 B) greater than 0.50 but less than or equal to 0.60 C) greater than 0.60 but less than or equal to 0.70 D) greater than 0.70

Treasury bills (T-bills) may be purchased by individuals, and require a minimum investment of $100 par value

Indicate whether the statement is true or false.