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4. A traffic safety company publishes reports about motorcycle fatalities and helmet use. In the first...

4. 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

2084

Use

alpha=0.05

level of significance. What are the null and alternative​ hypotheses?

riders not wearing a helmet. Complete parts ​(a) through ​(c) below.

Location of injury

Observed Count

Expected Count

Multiple Locations

1049

Head

866

Neck

3535

Thorax

89

​Abdomen/Lumbar/Spine

45

find the expected count

find the x^2

find the p value

math   Statistics-And-Probability   
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