Consider a sample with 10 observations of -3, 15, -2, -1, 0,9, 5, 2, 13, and 13. Use z-scores to determine if there are any outliers in the data; assume a bell-shaped distribution. (Round your answers to 2 decimal places. Negative values should be indicated by a minus sign.) The Z-score for the smallest observation The Z-score for the largest observation There are in the data