Polls taken during a city€™s last two administrations (one Democratic, one Republican) suggested that public support of the two mayors fell off linearly with years in office. Can it be concluded from the following data that the rates at which the two administrations lost favor were significantly different? Let α = 0.05. (y = 69.3077 ˆ’ 3.4615x with an estimated standard deviation of 0.9058 and yˆ— = 59.9407 ˆ’ 2.7373xˆ— with an estimated standard deviation of 1.2368.)

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Democratic Mayor Republican Mayor Years after Percent in Years after Percent in Taking Office, x Support, y Taking Office,xSupport, y 58 58 52 46 41 47 43 41 39 8