Many retail stores offer their own credit cards. At the time of the credit application, the customer is given a 10% discount on the purchase. The time required for the credit application process follows a uniform distribution with the times ranging from 20 seconds to 130 seconds. (round your answers to 2 decimal places) a. Fill in the blanks. Data type is Measurement scale is Mean of random variable X is seconds Variance of random variable X is b. What is the probability that approval process for a randomly selected credit application will take more than 2 minutes? c. What is the probability for a randomly selected 100 credit applications that the sample mean is at least 68.650 seconds? Z score is Probability is (use 4 digits after decimal point)