The number of lightning strikes on a square kilometer of open ground in a year has mean
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The number of lightning strikes on a square kilometer of open ground in a year has mean 6 and standard deviation 2.4. The National Lightning Detection Network (NLDN) uses automatic sensors to watch for lightning in 1-square-kilometer plots of land. Find the probability that the total number of lightning strikes in a random sample of 50 square-kilometer plots of land is less than 250. To calculate this probability, restate the problem in terms of the mean number of strikes.
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