10. Telephone calls arrive at an information desk at a rate of 10 per hour. a. What is the probability that the next call will arrive within 6 minutes (0.1 hour)? b. What is the probability that the next call will arrive within 18 minutes (0.3 hour)? a. The probability that the next call will arrive within 6 minutes is (Round to four decimal places as needed.) b. The probability that the next call will arrive within 18 minutes is (Round to four decimal places as needed.)