Having trouble setting up and solving these 2 word problems.
1. A set of data includes all of the positive odd integers less than 100, the positive, two-digit multiples of 10, and the numbers 4, 16, and 64. All included integers appear exactly once in the data. What is the positive difference between the median and the mean of the set of data? Express your answer as a decimal to the nearest thousandth.
2. Ayushi has six coins with a total value of 30 cents. The coins are not all the same. Two of Ayushi's coins will be chosen at random. What is the probability that the totalvalue of the two coins will be less than 15 cents? express your answer as a common fraction.