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# QUESTION 16 - A light bulb is advertised as lasting an average of 1000 hours with a standard deviation of 150 hours.

QUESTION 16 - A light bulb is advertised as lasting an average of 1000 hours with a standard deviation of 150 hours. Find the probability of buying a light bulb that will last between 850 and 1250 hours. Assume the variable is normally distributed.