Descriptive statistics

Fragmnt and ShortStry are two social media apps in which users can post messages in text. The character counts for posts on Fragmnt have a population mean of 96 and a standard deviation of 15. The character counts for posts on ShortStry have a population mean of 355 and a standard deviation of 39. For each app, the distribution of the character counts is clearly bell-shaped. Ivan's last post on Fragmnt was 145 characters. Manuel's last post on ShortStry was 251 characters. (a) Find the z-scores of Ivan's last post as a post on Fragmnt and Manuel's last post as a post on ShortStry. Round your answers to two decimal places. x ? z-score of Ivan's post: z-score of Manuel's post: (b) Relative to its population, which post was longer? Choose the best answer based on the z-scores of the two posts. O Ivan's post O Manuel's post X