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A purchasing manager at a university is investigating which brand of LCD projector to purchase...

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A purchasing manager at a university is investigating which brand of LCD projector to purchase for equipping classrooms Of major concern to her is the lifetime of the light bulbs used in the projectors One company has published the following histogram regarding the lifetimes of a sample of 50 bulbs used in its LCD projectors Frequency 15 11 Carlton 7 15 10 5 700 4 750 800 850 Bulb lifetime in hours 900 9 950 4 1000 Based on the histogram find the proportion of bulb lifetimes in the sample that are less than 950 hours Write your answer as a decimal and do not round your answer Aa V

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