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the average overseas trip cost 2708 per visitor. if we assume a normal distribution with a standard deviation of 405 what is the probability that

the average overseas trip cost 2708 per visitor. if we assume a normal distribution with a standard deviation of 405 what is the probability that the cost for a randomly selected trip is more than 3000? if we elect a random samly of 30 overseas trips and find the mean of the sample, what is the probability that the mean is greater than 3000

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