The data in part (a)Fuming because you are stuck in traffic? Roadway congestion is a costly item, both in time wasted and fuel wasted. Letxrepresent the average annual hours per person spent in traffic delays and letyrepresent the average annual gallons of fuel wasted per person in traffic delays. A random sample of eight cities showed the following data.x(hr)25, 52, 33, 81, 8, 20, 16, 5 y(gal)48, 33, 55, 63, 23, 82, 99 representaverageannual hours lost per person and average annual gallons of fuel wasted per person in traffic delays. Suppose that instead of using average data for different cities, you selected one person at random from each city and measured the annual number of hours lostxfor that person and the annual gallons of fuel wastedyfor the same person.x(hr)22, 4, 20, 42,17, 29, 2, 38 y(gal)62, 81, 45, 32, 43, 34, 72

(b) Computexandyfor both sets of data pairs and compare the averages. x data 1 data 2

y Data 1 Data 2

Compute the sample standard deviationss_xands_yfor both sets of data pairs and compare the standard deviations. s_{x data 1 data 2}

s_y Data 1 Data 2