The frequency of repair for the trucks owned by a trucking firm over a five-year period has been tabulated. The results are shown in the frequency distribution below. Find the mean number of repairs over the five-year period. Please round your answer to the nearest tenth. 
A) mean = 11.9
B) mean = 10.0
C) mean = 11.6
D) mean = 13.4
E) mean = 13.1
Correct Answer:
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