11 total pt(s)] Three commuters from Sackville wanted to determine what affected

Question

11 total pt(s)] Three commuters from Sackville wanted to determine what affected the time it took to get to Dalhousie the morning. An experiment conducted using 2 possible routes in was (A and B) and the three different drivers. For each route driver combination, three trips were timed (in minutes). The data and partial ANOVA table are shown below. Driver Route A Route B 32 35 29 29 26 2 1 33 34 40 35 4 3 42 34 35 30 30 30 Source DF SS MS FP Driver 2 192 96 Route 1 40.5 40.5 Interaction 2 84 42 4 0.047 Error 12126 10.5 Total 17 442.5 Note that interactions are significant at the a 0.10 level. Use the Minitab mand invcd (or ato in R) o generate the correct critical t-value to use for multiple comparisons among the cell means. 12 pts) l what is the number of possible pairs of (Driver Route) cell means? Submit Answer incorect Tries Previous Tries what is the value of a (Enter at least four significant digits after the decimal. ptoon submu Answer Tries 0/3 The critical t-value has a student's t distribution with how many degress of freedom? 12 [1 pt(s)] Your receipt no is 157-616 326 PM O Ask me anything

Explanation / Answer

1) Possible no of pairs = 3*2 = 6.(A1,A2,A3,B1,B2,B3)

2) Significance level = 0.047

3) Degrees of freedom = 12

4) Critical values of t = 1.782 (From t table and Df = 12, significance level = 0.10, 2 sided test)

Source DF SS MS F p Driver 2 192 96 9.143 0.0039 Route 1 40.5 40.5 3.857 0.0731 Interaction 2 84 42 4.000 0.0467 Error 12 126 10.5 Total 17 442.5

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