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.
Time RepairedFrequency1 - 3 223 - 5 535 - 7 717 - 9 1089 - 11 10211 - 13 12013 - 15 14615 - 17 13517 - 19 9819 - 21 8421 - 23 4223 - 25 1225 - 27 8
A. mean = 11.9
B. mean = 10.0
C. mean = 11.6
D. mean = 13.4
E. mean = 13.1
Answer: E
Mathematics
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