The contingency table below shows the results of a random sample of molor vehicl

Question

The contingency table below shows the results of a random sample of molor vehicle crash deaths by age and gender At -010, perform a ho proportions of motor vehicle crash deaths involving males or females are the same for each group og ety of pr 1 stest on the clan that the and 12 Male Female 38 25 24 22 21 17 1919 the proportions the same for each group? 05 78 9 60 39 2 Are 0 A. Nothe value of 2 is too high to conclude the proportions are the same OB. Yes the value of 2 is high enough to conclude the proportions are tho same C. Yes, he value of r"s low enough to conclude the proporbonare the same D. No, the value of X2is too low to conclude the proportions the lane Click to select your answer

Explanation / Answer

from above

here as test statistic 14.76 is higher than criitical value 12.017 (at 0.1 level and 7 degree of freedom)

we reject null hypothesis

option A is correct

O 16-24 25-34 35-44 45-54 55-64 65-74 75-84 85 and older Total male 105 78 69 60 39 27 19 12 409 female 38 25 24 22 21 17 19 9 175 Total 143 103 93 82 60 44 38 21 584 E=rowtotal*column total/grand total 16-24 25-34 35-44 45-54 55-64 65-74 75-84 85 and older Total male 100.149 72.135 65.132 57.428 42.021 30.815 26.613 14.707 409 female 42.851 30.865 27.868 24.572 17.979 13.185 11.387 6.293 175 Total 143 103 93 82 60 44 38 21 584 =(O-E)^2/E 16-24 25-34 35-44 45-54 55-64 65-74 75-84 85 and older Total male 0.2350 0.4768 0.2297 0.1152 0.2171 0.4723 2.1778 0.4983 4.422 female 0.5492 1.1144 0.5369 0.2692 0.5075 1.1039 5.0898 1.1646 10.335 Total 0.784 1.591 0.767 0.384 0.725 1.576 7.268 1.663 14.7578

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