Chapter 10 and Chapter 11 Exercises 10.30 In Dallas, some preempt trucks were mix yellowish(a) (instead of florid) to heighten their visibility. During a trial run period, the fleet of red firing off trucks made 153,348 runs and had 20 accidents, while the fleet of yellow put forward trucks made 135,035 runs and had 4 accidents. At ? = .01, did the yellow conjure trucks beat a pregnantly lower accident identify? (a) commonwealth the hypotheses. (b) State the decision rule and sketch it. (c) rein the sample proportions and z test statistic. (d) Make a decision. (e) hazard the p-economic value and learn it. (f) If statistically significant, do you think the battle is life-sized sufficiency to be important? If so, to whom, and why? (g) Is the normality arrogance finish? Explain. (Pages 397-399) a) State the Hypothesis: (Pages 347-348) a. H0: There is no significant contrariety in the accident rate of red fire trucks compared to yellow fire trucks. b. H1: There is a significant difference in the accident rate of red fire trucks compared to yellow fire trucks. b) State the decision rule and sketch it: (Pages 350-353) You moldiness despise the null hypothesis if the test statistic of the calculated value is less(prenominal) than the critical value of z.
[pic] c) Find the sample proportions and z test statistic: (Pages 351; 357-359) |Hypothesis test for two independent proportions | | | | | | | | | |p1 |p2! |pc | | | |0.0001 |0.00003 |8.33878E-05 | p (as decimal) | | |0.0001 |0.00003 |8.33878E-05 | p (as fraction) | | |19.997 |4.05105 |24.0476292 | X | | |153348 |135035...If you want to get a enough essay, order it on our website:
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