Consider the typical road network of Figure 1. It rep- resents an area of downtown Jacksonville, Florida. The streets are all one-way, with the arrows indicating the di- rection of traffic flow. The flow of traffic in and out of the network is measured in terms of vehicles per hour (vph). The figures given here are based on midweek peak traffic hours, 7 A.M. to 9 A.M. and 4 P.M. to 6 P.M. An increase of 2 percent in the overall flow should be al- lowed for during the Friday evening traffic flow. Let us construct a mathematical model that can be used to ana- lyze this network. 400 vph 800 vph 225 vph Hogan Street> 5 Duval Street Monroe Street 250 vph Figure 1 Downtown Jacksonville, Florida B Laura Street 350 vph 125 vph 300 vph 600 vph

An engineer wants to determine how the weight of a gas powered car, x, affects gas mileage, y. The accompanying days represent the weights of various domestic cars and their miles per gallon in the city for the most recent model year. weight                    Miles per (pounds), x           Gallon, y 3797                             16 3897                             16 2704                             24 3608                             20 3360                             22 3040                             22 3787                              17 2618                              24 3509                             18 3798                             16 3399                             17   interpret the slope y-intercept, if appropriate. Choose the correct answer below for y hat = -0.00661x + 41.80 a) A weightless car will get ____ miles per gallon, on average. It is not appropriate to interpret the slope.  b) for every pound added to the weight of the car, mileage in the city will…

Suppose a researcher collects data on the air pollution levels, measured in milligrams per cubic meter, for both urban and rural areas in 35 states. The data is plotted with urban air pollution levels on the horizontal axis and rural air pollution levels on the vertical axis. Nevada is an outlier in the ?x‑direction. What must be true about this state? The urban air pollution levels for this state are much higher or lower than the rest of the states in the data set. The rural air pollution levels for this state are much higher or much lower than the rest of the states in the data set. This state is an influential observation. The rural air pollution levels for this state are much higher or lower than other states in the data set that have similar urban air pollution levels. The absolute value of the residual of this state is large.

Consider the women's 100-yd dash (and the subsequent 100-m dash) in the Olympics since records have been kept. Determine the best way to combine all data and depict the data. Choose the correct answer below. O A. A line graph would be the best way to show all of the data over time, but some measurements would have to be converted to display the 100-yd and 100-m on the same graph. OB. A scatterplot would show the relationship between the 100-yd dash and the 100-m dash. O C. A stem and leaf plot would be the best way to show all of the data grouped by race times. O D. A histogram would show all of the data by comparing each year. The units of distance would not matter. Click to select your answer. 2:50 PM P Type here to search 3/10/202 Prt Scn End F10 PgUp Home F7 DII B F5 F6

A comparative Psychologist tests the amount of time it takes for mice to complete a maze as their dependent variable.  What type of data would this be? a. ratio b. interval c. ordinal d. nominal

Suppose that an urban geographer is studying historical changes in housing characteristics in London, England.  She wishes to determine if house size (square feet of living area) and the number of years since home construction are associated.  What method could she use to learn if such a relationship exists.