Suppose that the life expectancy of a certain brand of nondefective light bulbs is normally distributed, with a mean life of 1600 hr and a standard deviation of 50 hr. If 40,000 of these bulbs are produced, how many can be expected to last at least 1600 hr? Click here to view page 1 of the table Click here to view page 2 of the table. The number of light bulbs that can be expected to last at least 1600 hr is

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