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QUESTION 16 Predictor Coef SE Coef T P Intercept -48 . 42 0 . 610 Exp 6.278 1.580 0.000 AB -0. 1220 0. 592 R 1. 6639 0. 420 0. 000 H -0. 1631 0. 711 Analysis of Variance Source DF SS MS F P Model 0 . 000 Error 46415 Total 43 96369 Which explanatory variable's t-statistic is the smallest in absolute value? Oa. H Ob. More information is needed to answer the question Oc. Exp Od. Intercept Oe. R QUESTION 17 A cellphone company used a sample of size 800 to test the null hypothesis that a new purchase is equally likely to be made on each day of the week, versus the alternative the probabilities are not equal. Which of the following distributions is most useful for carrying out the test? Oa. A Standard Normal distribution Ob. A t-distribution with 799 df Oc. A t-distribution with 6 df Od. A Chi-Square distribution with 6 df Oe. A Chi-square distribution with 799 df