Use z-score table to answer questions 10 and 11. 10. A recent survey found that the average per-person cost of a 12-day international vacation is $1,865. If the data is normally distributed with a standard deviation of $380, find the percentage of vacationers who spent less than $1100 per day. Round to the nearest hundredth of a percent. 11. Find the percentage of vacationers from question 10 who spent between $1500 and $2000