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Anagram puzzles involve sets of scrambled letters that must be rearranged to form words. A standard intelligence test employs these puzzles as an aid in assessing verbal ability. Several years ago, an undergraduate noticed that some versions of the intelligence test employed anagram puzzles with lower-case letters, and some versions employed anagram puzzles with upper-case letters. She performed experiments, with college students as participants, to examine lower-case version. times for completion for the two versions. The histogram below summarizes information about the times for completion for the 25 students she tested on the Frequency 4 1500 500 700 900 1100 1300 Time for completion (in seconds) Based on the histogram, find the proportion of times for completion in the sample that are less than 900 seconds. Write your answer as a decimal, and do no round your answer. Sub