Question 3 - Mathematics: Probabilistic and Statistical Reasoning Practice Test for the TSIA2

Consider the set of numbers {3.5, 7, 12, 2.1, 1, 13.8, 4.2, 15, 8.9, 4.2}. If a number is selected at random from this list, what is the probability that the chosen number is less than the arithmetic mean of the numbers on the list?

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