Suppose a normally distributed set of data has a mean of 123 and a standard deviation of 15. use the 68-95-99.7 rule to determine the percent of scores in the data set expected to be between the scores 108 and 153. give your answer in decimal form (for example, enter 0.68, not 68 or 68%) and keep all decimal places throughout your calculations and in your final answer. g

Implement a document scanning function wordcountengine, which receives a string document and returns a list of all unique words in it and their number of occurrences, sorted by the number of occurrences in a descending order. if two or more words have the same count, they should be sorted according to their order in the original sentence. assume that all letters are in english alphabet. you function should be case-insensitive, so for instance, the words “perfect” and “perfect” should be considered the same word.