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Mathematics, 10.10.2021 16:20 jimena15
International travel is usually more expensive than domestic travel. A recent survey found that the average per-person cost of a 12-day internationalvacation is $1,755. This includes transportation, food, lodging, andentertainment. a. If the data are normally distributed with standard deviation $390, find thepercentage of vacationers who spent less than $1,200 per day. Round to thenearest hundredth of a percent. b. Find the per-day expense for one of these travelers who had a z-score of-2.1.c. If the data are normally distributed with standard deviation $490 instead of$390, would the answer to question 7b become lower or higher?
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