A traffic safety company publishes reports about motorcycle fatalities and helmet use. In the first accompanying data?table, the distribution shows the proportion of fatalities by location of injury for motorcycle accidents. The second data table shows the location of injury and fatalities for 2082 riders not wearing a helmet. Complete parts?(a) and?(b) below.

?(a) Does the distribution of fatal injuries for riders not wearing a helmet follow the distribution for all?riders? Use ?=0.10 level of significance. What are the null and alternative?hypotheses?

H0?: The distribution of fatal injuries for riders not wearing a helmet (does not follow or follows?) the same distribution for all other riders.

H1?: The distribution of fatal injuries for riders not wearing a helmet (does not follow or follows?) the same distribution for all other riders.

Full data set O Proportion of fatalities by location of injury for motorcycle accidents Abdomen/ Location of injury Multiple Head Neck Thorax locations Lumbar/ Spine Proportion 0.570 0.310 0.030 0.060 0.030 Location of injury and fatalities for 2082 riders not wearing a helmet Location of Multiple Abdomen/ Head Neck Thorax injury locations Lumbar/ Spine Number 1042 876 36 83 45