Question
A certain type of light bulb has an average life of 400 hours, with a standard deviation of 75 hours. The length of the life
A certain type of light bulb has an average life of 400 hours, with a standard deviation of 75 hours. The length of the life of the bulb can be closely approximated by a normal curve. An amusement park buys and installs 1000 such bulbs. Find the total number that can be expected to last for less than 600 hours.
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Fundamental Managerial Accounting Concepts
Authors: Thomas Edmonds, Christopher Edmonds, Bor Yi Tsay, Philip Old
7th edition
978-0077632427, 77632427, 78025656, 978-0078025655
