Among drivers who have had a car crash in the last year, 160160 were randomly selected...

Among drivers who have had a car crash in the last year, 160160 were randomly selected and categorized by age. The results are listed in the table below.

Age	Under 25	25-44	45-64	Over 64
Drivers	62	42	21	35

If all age groups have the same crash rate, we would expect (due to the age distribution of licensed drivers) the given age groups to have 16%, 44% ,27%, and 13%1of the crashes, respectively. At the 0.025 significance level, test the claim that the age distribution of crashes conforms to the age distribution of licensed drivers.

(a) Find the rejection region.
Reject H0 if χ2>

(b) Find the test statistic. (Round your final answer to 2 decimal places.)
χ2 =

(c) Do these data provide significant evidence that the age distribution of crashes does not conform to the age distribution of licensed drivers? (Type: Yes or No )

Expert Solution

orchestra answered 2 years ago

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