Does the amount of crime in an area predict the level of police presence? The following table
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Question:
Does the amount of crime in an area predict the level of police presence? The following table displays data on the number of crimes per square mile and the number of police agencies per 1,000 square miles in a sample of states. Using an alpha level of .05 and two-tailed alternative hypothesis, conduct a five-step hypothesis test to determine whether the IV is a significant predictor of the DV.sy = 6.39; andsx = 2.76;r= .71
State | Crime per Sq. Mile (x) | Police Agencies per 1,000 Sq. Miles (y) | xy | x2 | y2 |
Georgia | 7.30 | 9.40 | (7.30)(9.40) = 68.62 | 7.302=53.29 | 9.402=88.36 |
Iowa | 1.40 | 7.20 | (1.40)(7.20) = 10.08 | 1.402=1.96 | 7.202=51.84 |
Kansas | 1.30 | 4.40 | (1.30)(4.40) = 5.72 | 1.302=1.69 | 4.402=19.36 |
Maine | 1.00 | 3.90 | (1.00)(3.90) = 3.90 | 1.002=1.00 | 3.902=15.21 |
Minnesota | 1.90 | 5.30 | (1.90)(5.30) = 10.07 | 1.902=3.61 | 5.302=28.09 |
Missouri | 3.50 | 8.40 | (3.50)(8.40) = 29.40 | 3.502=12.25 | 8.402=70.56 |
Nebraska | 0.70 | 3.20 | (0.70)(3.20) = 2.24 | 0.702=0.49 | 3.202=10.24 |
Pennsylvania | 7.60 | 24.90 | (7.60)(24.90) = 189.24 | 7.602=57.76 | 24.902=620.01 |
South Carolina | 6.90 | 8.40 | (6.90)(8.40) = 57.96 | 6.902=47.61 | 8.402=70.56 |
Washington State | 3.80 | 3.70 | (3.80)(3.70) = 14.06 | 3.802=14.44 | 3.702=13.69 |
N = 10 | x=35.4 | y=78.8 | xy=391.29 | x2=194.1 | y2=987.92 |
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