Question
a certain type of light bulb is advertised to have an average life of 1200 hours. if in fact, light bulbs of this type only
a certain type of light bulb is advertised to have an average life of 1200 hours. if in fact, light bulbs of this type only average 1185 hours with a standard deviation of 80 hours, what is the probability that a sample of 100 bulbs will have an average life of at least 1200 hours?
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Numerical Analysis
Authors: Richard L. Burden, J. Douglas Faires
9th edition
538733519, 978-1133169338, 1133169333, 978-0538733519
