At least one of the answers above is NOT correct. 2 of the questions remain unan

Question

At least one of the answers above is NOT correct. 2 of the questions remain unanswered blem 8 blem 9 blem 10 blem 11 blem 12 oblem 13 blem 14 (1 point) Among drivers who have had a car crash in the last year, 140 were randomly selected and categorized by age, with the results listed in the table below Age Under 2525 1445-64 Over 64 Drivers58 31 20 31 il al ages have th same cash itte we would expect because ofthe agedst i uti n of licensed drivers the given categories to have 16%, 44%, 27%, 13% of the subjects, respectively. At the 0.025 significance level, test the claim that the distribution of crashes conforms to the distribution of ages The test statistic is 2- The critical value is 2- The conclusion is 16 oblerm 17 oblem 18 oblem 19 oblem 20 A. There is sufficient evidence to warrant the rejection of the claim that the distribution of crashes conforms to the distibuion of ages. OB. There is not sufficient evidence to warrant the rejection of the claim that the distribution of crashes conforms to the distibuion of ages Note: You can earn partial credit on this problem You have attempted this problem 1 time You received a score of 33% for this attempt.

Explanation / Answer

applying chi square goodness of fit test:

test statistic =89.1634

critical value =9.3484

observed Expected Chi square category Probability O E=total*p =(O-E)^2/E under 25 0.160 58.000 22.40 56.58 25-44 0.440 31.000 61.60 15.20 45-64 0.270 20.000 37.80 8.38 >64 0.130 31.000 18.20 9.00 1 140 140 89.1634

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