7. International travel is usually more expensive than domestic travel. A recent survey found that the average per-person cost of a 12-day international
vacation is $1,755. This includes transportation, food, lodging, and
entertainment.
a. If the data are normally distributed with standard deviation $390, find the
percentage of vacationers who spent less than $1,200 per day. Round to the
nearest 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?
8. A Caribbean
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(c) compare the results of parts (a) and (b). in general, how do you think the mode, median, and mean are affected when each data value in a set is multiplied by the same constant? multiplying each data value by the same constant c results in the mode, median, and mean increasing by a factor of c. multiplying each data value by the same constant c results in the mode, median, and mean remaining the same. multiplying each data value by the same constant c results in the mode, median, and mean decreasing by a factor of c. there is no distinct pattern when each data value is multiplied by the same constant. (d) suppose you have information about average heights of a random sample of airline passengers. the mode is 65 inches, the median is 72 inches, and the mean is 65 inches. to convert the data into centimeters, multiply each data value by 2.54. what are the values of the mode, median, and mean in centimeters? (enter your answers to two decimal places.) mode cm median cm mean cm in this problem, we explore the effect on the mean, median, and mode of multiplying each data value by the same number. consider the following data set 7, 7, 8, 11, 15. (a) compute the mode, median, and mean. (enter your answers to one (1) decimal places.) mean value = median = mode = (b) multiply 3 to each of the data values. compute the mode, median, and mean. (enter your answers to one (1) decimal places.) mean value = median = mode = --