The life expectancy of a fluorescent light bulb is given by the number of hours that it will burn. From the frequency distribution below, find the mean life of this type of bulb. Please round your answer to the nearest tenth.
Life of Bulb(hours)MidpointxFrequencyfProductxf0.5 - 700.5 2 700.5 - 1,400.5 12 1,400.5 - 2,100.5 14 2,100.5 - 2,800.5 17 2,800.5 - 3,500.5 28 3,500.5 - 4,200.5 33 4,200.5 - 4,900.5 14 4,900.5 - 5,600.5 5
A. mean = 3,067.4 hours
B. mean = 3,077.7 hours
C. mean = 3,083.2 hours
D. mean = 3,082.8 hours
E. mean = 3,062.2 hours
Answer: B
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