You work for an insurance company and are studying the relationship between types of crashes and the vehicles involved. As part of your study, you randomly select
You work for an insurance company and are studying the relationship between types of crashes and the vehicles involved. As part of your study, you randomly select
3589
vehicle crashes and organize the resulting data as shown in the contigency table. At
|
α=0.10, can you conclude that the type of crash depends on the type of vehicle? Complete parts (a) through (d).
|
Vehicle
|
|
|
|---|---|---|---|
|
Type of crash
|
Car
|
Pickup
|
Sport utility
|
|
Single-vehicle
|
866
|
323
|
340
|
|
Multiple-vehicle
|
1145
|
487
|
428
|
Question content area bottom
Part 1
(a) Identify the claim and state the null and alternative hypotheses.
H0: The type of crash and the type of vehicle are ▼
independent
dependent
Ha: The type of crash and the type of vehicle are ▼
dependent
independent
The
▼
alternative hypothesis
null hypothesis
is the claim.
H0: The type of crash and the type of vehicle are
Ha: The type of crash and the type of vehicle are
Determine the degrees of freedom.
find the critical value. and identify the rejection region.
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