The recommended minimum credit card payment for a sample of 100 credit card holders is summarized below: Minimum Payment ($) |Frequency 15 to under 30 36 30 to under 45 33 45 to under 60 18 60 to under 75 7 75 to under 90 6 a. Estimate the mean minimum payment. Mean: Round to 2 decimal places.b. Using that median class, estimate the median minimum payment. Median: c. What is the modal class? Modal Class: (click to select) v d. Describe the shape of the distribution in terms of symmetry/skewness. Skewness: (click to select) v