6. Create your own problem (Sort of) List ten test scores between 0 and 100. Repetition is allowed. Ten numbers: a. Find the mean and the standard deviation of these ten numbers you listed above. b. What two scores would be the boundaries for 68% of the data. (decimal answers are fine) c. Based on your data above, what is the z-score of a test grade of 72% d. Would a score of 8% be unusual for this data? Statistically explain your answer.