value 3800 points Simple regression was employed to establis

value 38.00 points Simple regression was employed to establish the effects of childhood exposure to lead. The effective sample size was about 122 subjects. The independent variable was the level of dentin lead (parts per million). Below are regressions using various dependent variables. (a-b) Calculate the t statistic for each slope and from the p-values, which slopes differ from zero at a = .01. (Round your answers to 2 decimal places. Negative values should be indicated by a minus sign.)

Solution

(1) t = -0.035/0.017 =-2.058824

Yes.

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(2) t= -0.03/0.022 = -1.363636

No

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(3) t=-0.006/0.008 =-0.75

No

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(4) t=1.8/1.31=1.374046

No

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(5)t =0.159/0.055 =2.890909

Yes

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(6) t= -0.319/0.012 = -26.58333

Yes

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(7)t=0.043/0.017=2.529412

No

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(8) t=10.8/7.39=1.461434

No

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(9) t=-0.8/0.585=-1.367521

No