Question 11 David's gasoline station offers 4 cents off per gallon if the customer pays in cash and does not use a credit card. Past evidence indicates that 40% of all customers pay in cash During a one-hour period 15 customers buy gasoline at this station. What is the mean of this BINOMIAL probability distribution? Correct Answer Not Provided 0 6 0 3.6 O 14 Question 12 2 . David's gasoline station offers 4 cents off per gallon if the customer pays in cash and does not use a credit card. Past evidence indicates that 40% of all customers pay in cash. During a one-hour period 15 customers buy gasoline at this station. What is the variance of this BINOMIAL probability distribution? O Correct Answer Not Provided 3.6 0 6 O 15