a. A trafc safety company publishes reports about motorcycle fatalities and helmet use. in the first accompanying data table. the distribution shows the propo an fatalities by location of injury for motorcycle accidents. The second data table shows the location of injury and fatalities for 2065 riders not wearing a helmet. Complete parts (a) and (b) below. '3 Click the icon to view the tables. 7 Click the icon to view the chi-square table of critical values. (a) Does the distribution of fatal injuries for riders not wearing a helmet follow the distribution for all riders? Use or = 0.10 level of signicance. What are the null and alternative hypotheses? H0: The distribution of fatal injuries for riders not wearing a helmet (1) the same distribution for all other riders. H1: The distribution of fatal injuries for riders not wearing a helmet (2) the same distribution for all other riders. Compute the expected counts for each fatal injury. Location of injury Observed Count Expected Count Multiple Locations 1039 Head 857 Neck 38 Thorax 83 AbdomenILumbarISpine 48 (Round to two decimal places as needed.) What is the test statistic? 1% = |:| (Round to three decimal places as needed.) What is the range of Pvalues tor the test? The range of Pvalues tor the test is (3) Based on the results, does the distribution of fatal injuries for riders not wearing a helmet follow the distribution for all other riders at a significance level of o = 0.10? (4) There (5) sufcient evidence that the distribution of fatal injuries for riders not wearing a helmet (6) the distribution for all riders. 0:) Compare the observed and expected counts for each category. What does this information tell you? Motorcycle fatalities from (7) occur (a) frequently for riders not wearing a helmet, while they occur (9) frequently for all other locations. 8: Distribution of fatalities by location of injuw Full data set @ Proportion of fatalities by location of injury for motorcycle accidents Location of Injury Multiple locations Head Neck Thorax Abdomen] Lumbar! Spine Proportion 0.570 0.310 0.030 0.060 0.030 Location of injury and fatalities for 2065 riders not wearing a helmet Location at injury Multiple locations Head Neck Thorax Abdomen} Lumbar! 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O greater than 0.10. (4) O Reject Ho, 0 does not follow 0 does not follow 0 between 0.01 and 0.025. Q Do \"01751901170. 0 less than 0.01. 0 between 0.025 and 0.05. (5) O is not (6) 0 follows (7) 0 head injuries 0 neck (8) 0 more (9) 0 less 0 is 0 does not follow 0 multiple iocations 0 less 0 more 0 thorax O ahdomenllumbarlspine 9. A book claims that more hockey players are born in January through March than in October through December. The following data show the number of players selected in a draft of new players for a hockey league according to their birth month. Is there evidence to suggest that hockey players' birthdates are not uniformly distributed throughout the year? Use the level of signicance or = 0.05. Click here to view the tattle.\"j