Anagram puzzles involve sets of scrambled letters that must be rearranged to for

Question

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 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 lower-case version. Based on the histogram, find the proportion of times for completion in the sample that are less than 1100 seconds. Write your answer as a decimal, and do not round your answer.

Explanation / Answer

P(less than 100) = (5 + 9 + 6) / 25

                           = 20 / 25

                           = 0.8 (ans)

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