Dаtа Set This hаs details abоut 408 rоller cоasters in the U.S. and other South American and European countries. You will work with speed information of all roller coasters, find mean, standard deviation, make conclusion on Empirical rule, and find z-score of specific roller coasters. Open data set in StatCrunch StatCrunch command Login StatCrunch Click on data set link above. Select Graph, then Histogram. Select Speed under columns. In Display options, overlay distribution, select Normal. In Markers, check the box for Mean. Click on Compute to view histogram. Mean and SD will be displayed on top. Save this image and upload in this question. Use same data set, Mean, and standard deviation values for next question.