. Bank of Baltimore is interested in studying the number of people who use the ATM located outside its office late at night. On average, 1.6 customers walk up to the ATM during any 10-minute interval between 9pm and midnight.

• What type of probability distribution is the number of customers using the ATM during any 10-minute interval between 9pm and midnight? What are the key parameters? (10 points)
• What is the probability
  • Exactly 1 customer during any 10-minute interval? (10 points)
  • Less than 3 customers during any 10-minute interval? (10 points)
  • At least 3 customers during any 10-minute interval? (10 points)
• What is the mean and variance of the number of customers using the ATM during any 10-minute interval between 9pm and midnight? (10 points)