A sample of 200 individuals are tested for their blood type is given in the firs

Question

A sample of 200 individuals are tested for their blood type is given in the first table, and the results are used to test the hypothesized distribution of blood types. The observed results are given in the second table. At the .05 level of significance, is there sufficient evidence to show that the stated distribution is incorrect?

(a) Find the test statistic. (Give your answer correct to two decimal places.)


(ii) Find the p-value. (Give your answer bounds exactly.)
___ < p < ___

Blood Type A B O AB Percent 0.41 0.09 0.42 0.08

Explanation / Answer

from chi square table

here test stat =5.382

(ii) p value fro above test stat =0.1459

observed Expected Chi square Blood type P=1/7 O E=total*p =(O-E)^2/E A 0.410 72.00 82.00 1.22 B 0.090 17.00 18.00 0.06 O 0.420 87.00 84.00 0.11 AB 0.080 24.00 16.00 4.00 200 200 5.382

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