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You are curious as to whether the law actually does reduce highway deaths. Using information in...

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Basic Math

  1. You are curious as to whether the law actually does reducehighway deaths. Using information in the table below, perform anappropriate test to determine whether speed limits are associatedwith lower traffic deaths (at a .01 significance level). Explainyour reasoning below the table if necessary.

-> There IS a speed limit law:

    Variable|      Obs       Mean    Std.Dev.      Min        Max

-------------+--------------------------------------------------------

traffic_1992|        8        1.5   .3338092       1.1        2.1

-> There IS NOT a speed limitlaw:

    Variable|      Obs       Mean    Std.Dev.      Min        Max

-------------+--------------------------------------------------------

traffic_1992|        42   1.909524   .4410683         1        2.7

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