The accompanying data file shows the annual expenditures (Expenditures in S) for 100 Amazon Prime customers. Click here for the Excel Data File a. Construct a boxplot for the annual expenditures variable. Does the boxplot suggest that outliers exist? O No outliers exist. O An outlier exists in the upper part of the distribution. O An outlier exists in the lower part of the distribution. O Outliers exist in both the lower and upper part of the distribution. b-1. Use z-scores to determine if there are any outliers for the annual expenditures variable. Note: Round final answers to 2 decimal places. Negative amounts should be indicated by a minus sign. z-score for the smallest observation z-score for the largest observation b-2. The z-scores for the minimum and maximum observations suggest that O no outliers exist. O an outlier exists in the upper part of the distribution O an outlier exists in the lower part of the distribution. O outliers exist in both the lower and upper part of the distribution.